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Astronomie et astrophysique : "Les plus puissantes étoiles de l'univers - l'énergie phénoménale des Supernova et des Hypernova" Par Balade Mentale dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%20class%3D%22chalk%22%3E%3Cspan%20style%3D%22color%3A%23ffff66%3B%22%3ESYNOPSIS%26nbsp%3B%3A%3C%2Fspan%3E%3Cbr%3E%0D%0A%3Cbr%3E%0D%0AComment%20d%E9finir%20simplement%20un%20trou%20noir%26nbsp%3B%3F%20Quand%20a-t-on%20imagin%E9%20pour%20la%20premi%E8re%20fois%20leur%20existence%26nbsp%3B%3F%20Est-il%20vrai%20que%20les%20trous%20noirs%20ralentissent%20le%20temps%26nbsp%3B%3F%20Que%20se%20%0D%0A%0D%0Apasse-t-il%20%E0%20l%27int%E9rieur%26nbsp%3B%3F%20Pourrait-on%20voyager%20dans%20l%3Fespace%20en%20utilisant%20les%20trous%20de%20ver%26nbsp%3B%3F%20Un%20trou%20noir%20menace-t-il%20le%20syst%E8me%20solaire%26nbsp%3B%3F%20comment%20peut-on%20les%20%0D%0A%0D%0Aobserver%3F%3Cbr%3E%0D%0A%3Cbr%3E%0D%0AConf%E9rence%20du%209%20septembre%202022%20au%20Patronage%20La%EFque%20Jules%20Vall%E8s%20%28Paris%2015e%29%20donn%E9e%20par%20Jean-Pierre%20Luminet%20%E0%20l%3Foccasion%20de%20la%20parution%20de%20son%20ouvrage%20%AB%26nbsp%3BLes%20trous%20noirs%20en%20100%20%0D%0A%0D%0Aquestions%26nbsp%3B%BB%20%28Tallandier%202022%29%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EUne%20conf%E9rence%20passionnante%20et%20tr%E8s%20compl%E8te%2C%20par%20l%27un%20des%20plus%20grands%20vulgarisateurs%20et%20didacticiens%20sur%20le%20sujet.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3E%C0%20voir%26nbsp%3B%21%3C%2Fp%3E
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Astrophysique et cosmologie : "Quelques questions sur les trous noirs" Par Jean-Pierre Luminet dans la catégorie "Science & Technologie" |
%3Cp%20class%3D%22news%22%20style%3D%22text-align%3A%20center%3B%22%3E%3Cimg%20alt%3D%22%22%20src%3D%22IMAGES%2Fanechoic-chamber.webp%22%20style%3D%22border-width%3A%201px%3B%20border-style%3A%20solid%3B%20width%3A%201024px%3B%20height%3A%20600px%3B%22%3E%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22news%22%3E%26nbsp%3B%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22chalk%22%3E%3Cspan%20style%3D%22color%3A%23ffff66%3B%22%3ESYNOPSIS%26nbsp%3B%3A%3C%2Fspan%3E%3Cbr%3E%0D%0A%3Cbr%3E%0D%0APeut-on%20cr%E9er%20une%20pi%E8ce%20sans%20r%E9verb%E9ration%26nbsp%3B%3F%20Comment%20se%20forme%20un%20%E9cho%26nbsp%3B%3F%20%C0%26nbsp%3Bquoi%20sert%20une%20salle%20an%E9cho%EFque%26nbsp%3B%3F%20Toutes%20ces%20r%E9ponses%20en%2012%20minutes%26nbsp%3B%21%3Cbr%3E%0D%0A%3Cbr%3E%0D%0A%3Cspan%20style%3D%22color%3A%23ffff66%3B%22%3ESOMMAIRE%26nbsp%3B%3A%3C%2Fspan%3E%3Cbr%3E%0D%0A%3Cbr%3E%0D%0A0%3A00%20-%20Introduction%3Cbr%3E%0D%0A2%3A48%20-%20Construire%20une%20salle%20an%E9cho%EFque%3Cbr%3E%0D%0A5%3A37%20-%20Les%20trois%20salles%20du%20LMA%3Cbr%3E%0D%0A9%3A55%20-%20Conclusion%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EUne%20superbe%20r%E9alisation%2C%20bien%20claire%20et%20didactique.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3E%C0%20voir%26nbsp%3B%21%3C%2Fp%3E
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Physique et ondes sonores : "Créer un silence parfait : les salles anéchoïques" Par ScienceClic dans la catégorie "Science & Technologie" |
%3Cp%20class%3D%22chalk%22%20style%3D%22text-align%3A%20justify%3B%22%3E%3Cspan%20style%3D%22color%3A%23ffff66%3B%22%3ESYNOPSIS%26nbsp%3B%3A%3C%2Fspan%3E%3Cbr%3E%0D%0A%3Cbr%3E%0D%0AQu%27est-ce%20qu%27une%20exp%E9rience%20de%20pens%E9e%26nbsp%3B%3F%3Cbr%3E%0D%0A%3Cbr%3E%0D%0AComment%20les%20exp%E9riences%20de%20pens%E9e%20ont-elle%20permis%20le%20d%E9veloppement%20de%20la%20physique%20moderne%26nbsp%3B%3F%3Cbr%3E%0D%0A%3Cbr%3E%0D%0A%C9tienne%20Klein%2C%20directeur%20de%20recherche%20au%20CEA%2C%20commente%20et%20analyse%20dans%20cette%20conf%E9rence-vid%E9o%20des%20exp%E9riences%20de%20pens%E9e%20c%E9l%E8bres%26nbsp%3B%3A%20de%20Galil%E9e%20%E0%20Einstein.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EFormidable%20%C9tienne%20Klein%26nbsp%3B%3A%20grand%20didacticien%20devant%20l%27%E9ternel%2C%20et%20connaisseur%20hors%20pair%20de%20l%27%E9pist%E9mologie%20de%20la%20physique.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EUne%20conf%E9rence%20synth%E8se%20passionnante%2C%20claire%2C%20accessible%20%E0%20tous%2C%20pleine%20d%27anecdotes%2C%20qui%20ravira%20petits%20et%20grands.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EUn%20must%20super-divertissant%2C%20un%20ravissement%20pour%20l%27esprit.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3E%C0%20voir%26nbsp%3B%21%3C%2Fp%3E
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Science, physique, et relativité : "Les expériences de pensée", une Masterclass d'Étienne Klein - 21 Février 2018 dans la catégorie "Science & Technologie" |
%3Cp%20class%3D%22news%22%20style%3D%22text-align%3A%20center%3B%22%3E%3Cimg%20alt%3D%22%22%20src%3D%22IMAGES%2Fmachine_hydroelectrique_Armstrong.jpg%22%20style%3D%22border-width%3A%201px%3B%20border-style%3A%20solid%3B%20width%3A%20506px%3B%20height%3A%20768px%3B%22%3E%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22news%22%3E%26nbsp%3B%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20class%3D%22chalk%22%20style%3D%22text-align%3A%20justify%3B%22%3E%3Cspan%20style%3D%22color%3A%23ffff66%3B%22%3ECOMPL%C9MENTS%26nbsp%3B%3A%3C%2Fspan%3E%3Cbr%3E%0D%0A%3Cbr%3E%0D%0AL%27effet%20Armstrong%20est%20le%20processus%20physique%20par%20lequel%20l%27%E9lectricit%E9%20statique%20est%20produite%20par%20le%20frottement%20d%27un%20fluide.%20Il%20a%20%E9t%E9%20d%E9couvert%20pour%20la%20premi%E8re%20fois%20en%201840%20lorsqu%27une%20%E9tincelle%20%E9lectrique%20r%E9sultait%20du%20balayage%20de%20gouttelettes%20d%27eau%20par%20la%20vapeur%20s%27%E9chappant%20d%27une%20chaudi%E8re.%20L%27effet%20porte%20le%20nom%20de%20Louis%20Armstrong%20%2C%20qui%20devint%20plus%20tard%20le%20premier%20baron%20Armstrong%2C%20qui%20%E9tait%20l%27une%20des%20nombreuses%20personnes%20impliqu%E9es%20dans%20la%20d%E9couverte%20de%20l%27effet%20et%20l%27%E9tude%20des%20processus%20impliqu%E9s.%20En%20utilisant%20ce%20principe%2C%20Armstrong%20a%20continu%E9%20%E0%20inventer%20ce%20qu%27il%20a%20appel%E9%20la%20machine%20hydro%E9lectrique%20d%27Armstrong%20%2C%20qui%2C%20malgr%E9%20son%20nom%2C%20a%20g%E9n%E9r%E9%20de%20l%27%E9lectricit%E9%20statique%20et%20non%20de%20l%27%20%E9nergie%20hydro%E9lectrique.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0A%3Cspan%20style%3D%22color%3A%23ffff66%3B%22%3ED%C9COUVERTE%26nbsp%3B%3A%3C%2Fspan%3E%3Cbr%3E%0D%0A%3Cbr%3E%0D%0A%C0%20Seghill%20%2C%20pr%E8s%20de%20Newcastle%20upon%20Tyne%2C%20dans%20le%20nord%20de%20l%27Angleterre%2C%20le%20chemin%20de%20fer%20de%20la%20mine%20de%20charbon%20Cramlingham%20avait%20un%20moteur%20d%27%20enroulement%20de%2028%20chevaux%20%2821%20kW%29%20pour%20transporter%20les%20wagons%20%E0%20charbon.%20En%20septembre%201840%2C%20Patterson%2C%20le%20conducteur%20du%20moteur%2C%20remarqua%20une%20l%E9g%E8re%20fuite%20de%20vapeur%20%E0%20c%F4t%E9%20de%20la%20soupape%20de%20s%E9curit%E9..%20Craignant%20que%20la%20pression%20de%20la%20chaudi%E8re%20soit%20trop%20%E9lev%E9e%2C%20il%20fouilla%20dans%20le%20nuage%20de%20vapeur%20refroidissant%20pour%20lib%E9rer%20la%20soupape%2C%20et%20sentit%20un%20picotement%20dans%20ses%20doigts%20en%20la%20touchant.%20Il%20%E9tait%20incapable%20de%20voir%20clairement%20ce%20qui%20se%20passait%2C%20alors%20il%20a%20d%27abord%20pens%E9%20qu%27il%20s%27%E9tait%20cogn%E9%20les%20doigts.%20Cependant%2C%20pendant%20les%20jours%20suivants%2C%20il%20a%20fait%20des%20exp%E9riences%20simples%20et%20a%20finalement%20dit%20%E0%20ses%20coll%E8gues%2C%20qui%20ont%20v%E9cu%20le%20m%EAme%20ph%E9nom%E8ne.%20Patterson%20a%20alors%20d%E9couvert%20qu%27en%20d%E9pla%E7ant%20lentement%20son%20doigt%20vers%20la%20valve%2C%20il%20pouvait%20voir%20une%20%E9tincelle.%20La%20rumeur%20s%27est%20r%E9pandue%20de%20bouche%20%E0%20oreille%2C%20et%20une%20th%E9orie%20%E9tait%20que%20la%20chaudi%E8re%20risquait%20d%27exploser%20parce%20que%20le%20feu%20%E0%20l%27ext%E9rieur%20de%20la%20chaudi%E8re%20p%E9n%E9trait%20d%27une%20mani%E8re%20ou%20d%27une%20autre%20%E0%20l%27int%E9rieur.%20Le%20constructeur%20du%20moteur%20a%20d%E9cid%E9%20qu%27il%20%E9tait%20s%FBr%2C%20mais%20a%20dit%20%E0%20deux%20associ%E9s%2C%20Hugh%20Pattinsonet%20Henry%20Smith%2C%20qui%20a%20d%E9couvert%20que%20l%27effet%20%E9tait%20accru%20en%20cr%E9ant%20des%20%E9tincelles%20de%20%3F%20de%20pouce%20%2810%20mm%29%20si%20une%20pelle%20en%20m%E9tal%20%E9tait%20tenue%20dans%20la%20vapeur%20et%20la%20pointe%20d%27une%20lame%20de%20canif%20tenue%20pr%E8s%20de%20la%20valve.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0AArmstrong%2C%20qui%20%E0%20l%27%E9poque%20%E9tait%20un%20avocat%20avec%20un%20int%E9r%EAt%20pour%20la%20science%20et%20l%27ing%E9nierie%2C%20s%27est%20impliqu%E9%2C%20et%20a%20%E9crit%20%E0%20Michael%20Faraday%20concernant%20Patterson%3A%20%22il%20a%20%E9t%E9%20tr%E8s%20surpris%20par%20l%27apparition%20d%27une%20%E9tincelle%20brillante%2C%20qui%20passa%20entre%20le%20levier%20et%20sa%20main%2C%20et%20%E9tait%20accompagn%E9%20d%27une%20violente%20cl%E9%20dans%20ses%20bras%2C%20totalement%20diff%E9rente%20de%20tout%20ce%20qu%27il%20avait%20v%E9cu%20auparavant.%20%22%20Faraday%20a%20r%E9pondu%2C%20disant%20qu%27il%20ne%20pouvait%20pas%20%EAtre%20certain%20si%20l%27effet%20%E9tait%20d%FB%20%E0%20l%27%E9vaporation%20ou%20s%27il%20avait%20une%20cause%20chimique%20et%20sugg%E9rant%20d%27autres%20exp%E9riences%20qui%20pourraient%20%EAtre%20effectu%E9es.%20Faraday%20a%20publi%E9%20ces%20lettres%2C%20ainsi%20qu%27une%20de%20Pattinson%2C%20dans%20le%20London%20and%20Edinburgh%20Philosophical%20Magazine.%20Une%20longue%20correspondance%20s%27ensuivit.%20En%20novembre%201840%2C%20Armstrong%20a%20r%E9ussi%20%E0%20cr%E9er%20des%20%E9tincelles%20de%202%20pouces%20%2850%2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Physique, électrostatique, vapeur, et électricité : l'étonnante machine hydroélectrique d'Armstrong dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EUn%20ph%E9nom%E8ne%20tout%20%E0%20fait%20insolite%26nbsp%3B%3A%20le%20bas%20du%20slinky%20ne%20bouge%20pas%20d%27un%20centim%E8tre%20tant%20que%20la%20partie%20d%E9croch%E9e%20ne%20lui%20est%20pas%20tomb%E9e%20sur%20le%20nez.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EUn%20petit%20must%20dans%20son%20genre.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3E%C0%20voir%26nbsp%3B%21%3C%2Fp%3E
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Expérience de physique étonnante : "Un slinky qui tombe défie-t-il la gravité ?" - Par Veritaserum dans la catégorie "Science & Technologie" |
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Astrophysique et relativité générale : Dans les secrets des trous noirs grâce à un radiotélescope sur la Lune dans la catégorie "Science & Technologie" |
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Physique : voir les ondes sonores dans la catégorie "Science & Technologie" |
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Astrophysique : une impressionnante comparaison des tailles des astéroïdes dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EL%27impact%20de%20ses%20maillons%20sur%20le%20sol%20fait%20tomber%20une%20cha%EEne%26nbsp%3Bbien%20con%E7ue%26nbsp%3Bplus%20vite%20que%20la%20m%EAme%20cha%EEne%20qui%20ne%20tombe%20que%20sous%20l%27effet%20de%20la%20gravit%E9.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EIncroyable%20%21%3C%2Fp%3E
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Physique étonnante : tomber plus vite que la gravité ne l'impose dans la catégorie "Science & Technologie" |
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Physique : "Expériences de la pensée", une conférence d'Étienne Klein - BnF - 7 Février 2019 : dans la catégorie "Science & Technologie" |
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Astrophysique, espace-temps, relativité, et cosmologie : Étienne Klein reçoit Aurélien Barrau sur le mystère des trous noirs lors de son émission "La conversation scientifique" sur France Culture dans la catégorie "Science & Technologie" |
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Physique, gravité, masse, et pesanteur : La chute des corps expliquée par Étienne Klein : dans la catégorie "Science & Technologie" |
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Astronomie, astrophysique, et cosmologie : une comparaison de la taille de quelques galaxies connues dans la catégorie "Science & Technologie" |
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Astrophysique, géologie, et voyage dans le temps : "Ces planètes Terres qui ont disparues" Par Balade Mentale dans la catégorie "Science & Technologie" |
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Aviation, recherche aéronautique, physique, et technologie supersonique: "La Faillite de la MHD française" par Jean-Pierre Petit dans la catégorie "Science & Technologie" |
%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22chalk%22%3E%3Cspan%20style%3D%22color%3A%23ffff66%3B%22%3ESYNOPSIS%20%3A%3C%2Fspan%3E%3Cbr%3E%0D%0A%3Cbr%3E%0D%0ADot%E9s%20d%27une%20%E9nergie%20ph%E9nom%E9nale%2C%20les%20trous%20noirs%20font%20partie%20des%20entit%E9s%20cosmiques%20les%20plus%20%E9nigmatiques.%20Un%20spectaculaire%20voyage%20%E0%20la%20d%E9couverte%20de%20ces%20monstres%20voraces%20qui%20engloutissent%20tout%20sur%20leur%20passage.%20Second%20volet%20%3A%20%E0%20la%20fin%20des%20ann%E9es%201950%2C%20les%20t%E9lescopes%20rel%E8vent%20la%20pr%E9sence%20de%20myst%E9rieux%20points%20chauds%20%E9mettant%20un%20rayonnement%20radio%2C%20les%20quasars...%3Cbr%3E%0D%0A%3Cbr%3E%0D%0APeu%20%E0%20peu%2C%20les%20sp%E9cialistes%20d%E9couvrent%20que%20les%20trous%20noirs%20sont%20bien%20plus%20nombreux%20qu%27ils%20ne%20le%20pensaient%20et%20qu%27ils%20d%E9vorent%20notre%20Univers.%20%C0%20la%20fin%20des%20ann%E9es%201950%2C%20les%20t%E9lescopes%20rel%E8vent%20la%20pr%E9sence%20de%20myst%E9rieux%20points%20chauds%20%E9mettant%20un%20rayonnement%20radio%20%3A%20les%20quasars.%20Les%20entit%E9s%20les%20plus%20lumineuses%20de%20l%3FUnivers%20sont%20en%20fait%20des%20r%E9gions%20compactes%20qui%20entourent%20des%20trous%20noirs%20supermassifs.%20L%27un%20d%27eux%20est%20d%E9tect%E9%20au%20beau%20milieu%20de%20notre%20Voie%20lact%E9e%3F%3Cbr%3E%0D%0A%3Cbr%3E%0D%0A%3Cspan%20style%3D%22color%3A%23ffff66%3B%22%3E%C9clairages%26nbsp%3B%3C%2Fspan%3E%3Cbr%3E%0D%0ADans%20ce%20passionnant%20documentaire%2C%20Rushmore%20DeNooyer%20%28La%20bombe%29%20nous%20entra%EEne%20%E0%20la%20rencontre%20d%27astronomes%20et%20de%20physiciens%2C%20parmi%20lesquels%20de%20nombreuses%20femmes%2C%20en%20pointe%20dans%20la%20recherche%20et%20les%20derni%E8res%20technologies%20d%27observation%20du%20cosmos.%20Pilot%E9%20par%20l%3Fastrophysicienne%20Janna%20Levin%20et%20enrichi%20d%27images%20spectaculaires%2C%20un%20%E9clairage%20captivant%20sur%20l%27origine%20des%20trous%20noirs%2C%20leur%20composition%20et%20leur%20fonctionnement%2C%20mais%20%E9galement%20sur%20ce%20que%20leur%20%E9tude%20peut%20nous%20apprendre%20sur%20la%20nature%20de%20l%3Fespace%2C%20du%20temps%20et%20de%20la%20gravit%E9.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EUn%20second%20%E9pisode%20passionnant%20%21%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3E%C0%201%3A19%2C%20la%20narratrice%20d%E9clare%20%3A%20%22%3Cspan%20style%3D%22color%3A%23ff0000%3B%22%3E%3Cem%3EPlus%20stup%E9fiant%20encore%2C%20ils%20sont%20plus%20massifs%2C%20et%20plus%20nombreux%20qu%27on%20ne%20l%27imaginait%3C%2Fem%3E%3C%2Fspan%3E%22.%20Mort%20de%20rire%20%21%26nbsp%3B%3Cimg%20border%3D%220%22%20src%3D%22IMAGES%2FICONES%2FIcone%2520-%2520LOL.gif%22%3E%26nbsp%3B%C7a%20fait%20des%20ann%E9es%20que%20je%20le%20dit%26nbsp%3B%21%20Franchement%2C%20mais%20quelle%20bande%20de%20buses...%20Parmi%20les%20scientifiques%2C%20il%20y%26nbsp%3Ba%20manifestement%26nbsp%3Bbeaucoup%20de%20gens%20%E0%20la%20conscience%20endormie%20qui%20sont%20inaptes%20%E0%20faire%20de%20la%20science.%20Ils%20sont%20entra%EEn%E9s%20%E0%20r%E9soudre%20des%20%E9quations%20complexes%2C%20certes%2C%20mais%20ils%20ont%20h%E9las%20le%20discernement%20atrophi%E9%2C%20c%27est%20terrible.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EUn%20excellent%20document%20qui%20nous%20r%E9gale.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3E%C0%20voir%20%21%3C%2Fp%3E
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Astrophysique, cosmologie, gravitation, et relativité : "Mystérieux trous noirs #2 : comment les détecter ?" ("Les ogres du cosmos") : dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%20class%3D%22chalk%22%3E%3Cspan%20style%3D%22color%3A%23ffff66%3B%22%3ESYNOPSIS%20%3A%3C%2Fspan%3E%3Cbr%3E%0D%0A%3Cbr%3E%0D%0ADot%E9s%20d%27une%20%E9nergie%20ph%E9nom%E9nale%2C%20les%20trous%20noirs%20font%20partie%20des%20entit%E9s%20cosmiques%20les%20plus%20%E9nigmatiques.%20Un%20spectaculaire%20voyage%20%E0%20la%20d%E9couverte%20de%20ces%20monstres%20voraces%20qui%20engloutissent%20tout%20sur%20leur%20passage.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0ADe%20tous%20les%20ph%E9nom%E8nes%20cosmiques%2C%20les%20trous%20noirs%20sont%20les%20plus%20fascinants.%20Engins%20de%20destruction%20apocalyptiques%2C%20ils%20font%20dispara%EEtre%20tout%20ce%20qui%20passe%20%E0%20leur%20port%E9e%20%3A%20particules%2C%20poussi%E8res%2C%20gaz%2C%20plan%E8tes%20et%20m%EAme%20%E9toiles%20g%E9antes%20%21%20La%20science%20dispose%20aujourd%27hui%20de%20pr%E9cieuses%20donn%E9es%20pour%20mieux%20appr%E9hender%20ces%20entit%E9s%20pr%E9sentes%20dans%20chaque%20galaxie%2C%20y%20compris%20la%20n%F4tre.%20Le%2011%20f%E9vrier%202016%2C%20l%27annonce%20de%20la%20d%E9tection%20de%20la%20collision%2C%20il%20y%20a%20un%20milliard%20d%3Fann%E9es%2C%20entre%20deux%20trous%20noirs%20et%20la%20d%E9couverte%20des%20ondes%20gravitationnelles%20qui%20a%20d%E9coul%E9%20de%20cet%20%E9v%E9nement%20ont%20fondamentalement%20chang%E9%20la%20compr%E9hension%20que%20nous%20avions%20de%20la%20formation%20de%20l%27Univers.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0A%3Cspan%20style%3D%22color%3A%23ffff66%3B%22%3E%C9clairages%26nbsp%3B%3C%2Fspan%3E%3Cbr%3E%0D%0ADans%20ce%20passionnant%20documentaire%2C%20Rushmore%20DeNooyer%20%28La%20bombe%29%20nous%20entra%EEne%20%E0%20la%20rencontre%20d%27astronomes%20et%20de%20physiciens%2C%20parmi%20lesquels%20de%20nombreuses%20femmes%2C%20en%20pointe%20dans%20la%20recherche%20et%20les%20derni%E8res%20technologies%20d%27observation%20du%20cosmos.%20Pilot%E9%20par%20l%3Fastrophysicienne%20Janna%20Levin%20et%20enrichi%20d%27images%20spectaculaires%2C%20un%20%E9clairage%20captivant%20sur%20l%27origine%20des%20trous%20noirs%2C%20leur%20composition%20et%20leur%20fonctionnement%2C%20mais%20%E9galement%20sur%20ce%20que%20leur%20%E9tude%20peut%20nous%20apprendre%20sur%20la%20nature%20de%20l%3Fespace%2C%20du%20temps%20et%20de%20la%20gravit%E9.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0ADocumentaire%20de%20Rushmore%20DeNooyer%20%28Etats-Unis%2C%202017%2C%2053mn%29%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EUn%20excellent%20documentaire%20de%20vulgarisation.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3E%C0%20voir%20%21%3C%2Fp%3E
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Astrophysique, gravitation, relativité, et cosmologie : "Mystérieux trous noirs #1 : comment se forment-ils ?" ("Anatomie d'un trou noir") : dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EUn%20super%20et%20tr%E8s%20bel%20%E9pisode%20%3A%20bien%20expliqu%E9%2C%20magnifique%2C%20un%20peu%20lyrique%2C%20et%20pertinent.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EUn%20must.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3E%C0%20ne%20pas%20manquer.%3C%2Fp%3E
Must
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Physique, astrophysique, étoiles, et atomes : "Transformations et origines de la matière ?" par Balade Mentale dans la catégorie "Science & Technologie" |
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Astrophysique et relativité : "Et si vous plongiez dans un trou noir ?" Par Balade Mentale dans la catégorie "Science & Technologie" |
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Physique quantique, froid, et supraconductivité : "La plus belle des inventions quantiques" par Julien Bobroff dans la catégorie "Science & Technologie" |
%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22chalk%22%3E%3Cspan%20style%3D%22color%3A%23ffff66%3B%22%3ESYNOPSIS%20%3A%3C%2Fspan%3E%3Cbr%3E%0D%0A%3Cbr%3E%0D%0ALe%20vide%20est%20un%20mot%20qui%20a%20plusieurs%20milliers%20d%27ann%E9es.%20Mais%20ce%20qui%20est%20mis%20derri%E8re%20le%20mot%20%22vide%22%20a%20constamment%20%E9volu%E9%20avec%20les%20diff%E9rentes%20th%E9ories%20philosophiques%20et%20scientifiques.%20Par%20exemple%2C%20le%20vide%20quantique%20est%20appel%E9%20%22vide%22%20mais%20ce%20%22vide%20quantique%22%20est%20constitu%E9%20de%20plein%20de%20choses%2C%20ce%20qui%20pose%20la%20question%20suivante%20%3A%20qu%27entend-on%20r%E9ellement%20par%20vide%20%3F%20Etienne%20Klein%2C%20physicien%20et%20philosophe%20des%20sciences%20au%20CEA%2C%20revient%20sur%20l%27histoire%20et%20les%20diff%E9rents%20sens%20de%20ce%20terme.%20Cette%20conf%E9rence%20a%20%E9t%E9%20r%E9alis%E9e%20lors%20de%20la%20formation%20du%20CEA%20pour%20les%20enseignants%20%22La%20science%20en%20marche%22%2C%20promotion%202019.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EUn%20excellente%26nbsp%3Bconf%E9rence%20d%27%C9tienne%26nbsp%3BKlein%2C%20facile%20d%27acc%E8s%2C%20claire%20et%20didactique%2C%20avec%20plein%20d%27anecdotes.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3ELa%20conf%E9rence%20est%20suivie%20de%20questions%20%2F%20r%E9ponses%26nbsp%3Btout%20aussi%20int%E9ressantes.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3E%C0%20voir%20%21%3C%2Fp%3E
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Physique quantique et cosmologie : "La notion de vide", une conférence d'Étienne Klein - 27 Février 2019 dans la catégorie "Science & Technologie" |
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Astronomie, astrophysique, espace-temps, et relativité : "Trous noirs et gravitation quantique" par Aurélien Barrau dans la catégorie "Science & Technologie" |
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Physique : l'étonnant moteur thermique à point de Curie dans la catégorie "Science & Technologie" |
%3Cp%20class%3D%22news%22%20style%3D%22text-align%3A%20center%3B%22%3E%3Cimg%20alt%3D%22%22%20src%3D%22IMAGES%2Fterre_plate_sur_rocher_dans_espace_640x432.jpg%22%20style%3D%22border-width%3A%201px%3B%20border-style%3A%20solid%3B%20width%3A%20640px%3B%20height%3A%20432px%3B%22%3E%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22news%22%20style%3D%22text-align%3Ajustify%3B%22%3E%26nbsp%3B%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EFranchement%2C%20il%20est%20pas%20bien%20malin%20%3A%20avec%207.000%24%20de%20budget%2C%20il%20pouvait%20se%20payer%20un%20petit%20tour%20en%20jet%20supersonique%2C%20monter%20%E0%2015.000%20ou%2020.000%20m%E8tres%20et%20y%20voir%20la%20rotondit%E9%20de%20la%20Terre...%20%28Qu%27on%20peut%20d%E9j%E0%20la%20voir%2C%20je%20le%20pr%E9cise%2C%20depuis%20un%20avion%20de%20ligne%20par%20beau%20temps%29%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3E%C0%20mon%20avis%2C%20il%20a%20intox%E9%20la%20Flat%20Earth%20Society%20pour%20construire%20sa%20fus%E9e.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3ECela%20dit%2C%20les%20platistes%20sont%20quand%20m%EAme%20des%20attard%E9s%20mentaux%2C%20des%20gens%20ayant%20une%20facult%E9%20de%20discernement%20atrophi%E9e%20ou%20morte%20%3A%20il%20suffit%20de%20lever%20les%20yeux%20au%20ciel%20la%20nuit%20et%20de%20regarder%20la%20Lune%20pour%20comprendre%20que%20les%20plan%E8tes%20sont%20des%20sph%E8res.%20Mais%20non%2C%20pour%20les%20platistes%2C%20ce%20sont%20des%20cr%EApes...%26nbsp%3BQuelle%20bande%20de%20nazes...%3C%2Fp%3E
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Astrophysique, et folie douce amusante et étonnante : Mark Hughes, l'homme qui veut prouver que la Terre est plate... dans la catégorie "Science & Technologie" |
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Mathématiques et physique : "Chaos", un film sur la théorie du chaos dans la catégorie "Science & Technologie" |
%3Cp%20class%3D%22DKKeswick%22%20style%3D%22text-align%3A%20justify%3B%22%3EUn%20%E9pisode%20tr%E8s%20didactique%2C%20et%20absolument%20passionnant%20%21%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20class%3D%22DKKeswick%22%20style%3D%22text-align%3A%20justify%3B%22%3E%C0%20ne%20pas%20rater%20%21%3C%2Fp%3E
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Mathématiques et physique : "Effet Papillon et Théorie du Chaos" — Science étonnante dans la catégorie "Science & Technologie" |
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Astronomie et astrophysique : une comparaison de la taille des trous noirs au début 2018 : dans la catégorie "Science & Technologie" |
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Astrophysique : "La terrifiante échelle des trous noirs" dans la catégorie "Science & Technologie" |
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Étrangeté de la physique quantique et de la lumière : l'étonnant interféromètre de Mach et Zehnder dans la catégorie "Science & Technologie" |
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Astrophysique, relativité, et cosmologie : "La Méthode scientifique - Les Trous noirs" avec Alain Riazuelo et Éric Gourgoulhon France Culture - 21 Février 2017 dans la catégorie "Science & Technologie" |
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Une expérience de physique amusante et incroyable avec de l'eau : la lévitation hydrodynamique dans la catégorie "Science & Technologie" |
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Cosmologie, Big Bang, physique quantique, lumière, et astrophysique : "Le rayonnement cosmologique — Science étonnante #42" ou fond diffus cosmologique dans la catégorie "Science & Technologie" |
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Astronomie et astrophysique : "Connaître la distance Terre-Lune au millimètre près ! AstronoGeek #1" dans la catégorie "Science & Technologie" |
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Physique et espace-temps : les points de vue de Cédric Villani et d'Étienne Klein à propos de la paternité de la théorie de la relativité d'Einstein dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EUne%20conf%E9rence%20passionnante%2C%20comme%20toujours%20avec%20%C9tienne%26nbsp%3BKlein%2C%20parce-que%20claire%20et%20bien%20didactique.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3E%C0%20voir%20%21%3C%2Fp%3E
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Physique quantique et épistémologie : "De quoi le vide est-il plein ?", une conférence d'Étienne Klein - 8 Mars 2017 dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EUne%20vid%E9o%20qui%20passionnante%20pour%20tous%20ceux%20qui%20sont%20int%E9ress%E9s%20par%20la%20cosmologie.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3E%C0%20voir%20%21%3C%2Fp%3E
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Cosmologie, Big Bang, astrophysique, et relativité : "L'Univers est il fini ou infini ?", un débat entre Aurélien Barrau et Patrick Peter dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3ESelon%20moi%2C%20mais%20je%20ne%20suis%20qu%27un%20modeste%20profane%20en%20physique%2C%20le%20principe%20d%27%E9quivalence%20est%20%22faux%22%20dans%20le%20sens%20o%F9%20il%20y%20a%20une%20diff%E9rence%20fondamentale%20entre%20l%27ascenseur%26nbsp%3Bdans%20l%27espace%20et%20celui%20pos%E9%20sur%20Terre%20%3A%20ce%20dernier%20baigne%20dans%20un%20champ%20de%20gravitation%26nbsp%3Bet%20pas%20le%20premier.%20On%20doit%20donc%20pouvoir%20d%E9tecter%20ce%20champ%20et%20d%E9terminer%20ainsi%20une%20diff%E9rence%20avec%20la%20situation%20du%20premier%20ascenseur%26nbsp%3Bperdu%20dans%20l%27espace%20et%20en%20acc%E9l%E9ration%20constante.%20Mais%20peut-%EAtre%20que%20je%20me%20trompe...%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3EQuoi%20qu%27il%20en%20soit%2C%20voil%E0%20une%20nouvelle%20conf%E9rence%20d%27%C9tienne%20Klein%20tout%20%E0%20fait%20passionnante%20et%20didactique.%3C%2Fp%3E%0D%0A%0D%0A%3Cp%20align%3D%22justify%22%20class%3D%22DKKeswick%22%3E%C0%20voir%20%21%3C%2Fp%3E
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Particules, physique quantique, et relativité : "Quoi de neuf dans l'univers ?", une conférence d'Étienne Klein - Pau - 18 Novembre 2016 dans la catégorie "Science & Technologie" |
%3Cp%3EUne%20conf%E9rence%20id%E9ale%20pour%20les%20jeunes%20ainsi%20que%20pour%20pour%20tous%20ceux%20qui%20n%27y%20connaissent%20rien.%3Cbr%3E%3Cbr%3E%C0%20voir%20%21%3C%2Fp%3E
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Astrophysique et astronomie : "Qu'est-ce qu un trou noir, très simplement ?", une conférence d'Aurélien Barrau dans la catégorie "Science & Technologie" |
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Astrophysique et astronomie : "Peut-on sortir d'un trou noir ?" dans la catégorie "Science & Technologie" |
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Un phénomène physique étonnant encore partiellement inexpliqué par la science : la sonoluminescence ou comment créer de la lumière avec un liquide, une bulle de gaz, et du son dans la catégorie "Science & Technologie" |
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Astrophysique, pulsars, trous noirs, et ondes gravitationnelles : "L'astronomie gravitationnelle à l'écoute du côté obscur de l'Univers" par Éric Chassande-Mottin - Novembre 2016 dans la catégorie "Science & Technologie" |
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Astrophysique et cosmologie : "Peut-on mathématiquement prédire l'avenir du système solaire ?" par Cédric Villani - 29 Mars 2011 dans la catégorie "Science & Technologie" |
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Astrophysique étonnante et relativité : une magnifique comparaison des différentes tailles de trous noirs dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22center%22%3E%0D%0A%3Cimg%20border%3D%220%22%20src%3D%22IMAGES%2Fspectres_exemples.jpg%22%20width%3D%22960%22%20height%3D%22720%22%3E%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3E%26nbsp%3B%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3E%3Cu%3E%3Cb%3E%3Cfont%20size%3D%225%22%3ESynopsis%20%3A%3C%2Ffont%3E%3C%2Fb%3E%3C%2Fu%3E%3C%2Fp%3E%0D%0A%3Cblockquote%3E%0D%0A%09%3Cp%20align%3D%22justify%22%3EEn%201814%2C%20l%27opticien%20et%20physicien%20allemand%20Joseph%20von%20%0D%0A%09Fraunhofer%20r%E9alise%20une%20exp%E9rience%20qui%20influencera%20l%27astrophysique%20jusqu%27%E0%20%0D%0A%09nos%20jours.%3C%2Fp%3E%0D%0A%09%3Cp%20align%3D%22justify%22%3EEn%20%E9tudiant%20la%20mani%E8re%20dont%20les%20prismes%20de%20verre%20%0D%0A%09d%E9composent%20la%20lumi%E8re%20du%20soleil%2C%20il%20d%E9couvre%20la%20pr%E9sence%20de%20raies%20noires%20%0D%0A%09dans%20le%20spectre%20color%E9.%3C%2Fp%3E%0D%0A%09%3Cp%20align%3D%22justify%22%3ECorrespondant%20%E0%20des%20longueurs%20d%27ondes%20fixes%2C%20celles-ci%20%0D%0A%09permettront%20d%27affiner%20les%20mesures%20et%20de%20produire%20des%20lunettes%20et%20t%E9lescopes%20%0D%0A%09d%27une%20pr%E9cision%20encore%20jamais%20vue%3C%2Fp%3E%0D%0A%09%3Cp%20align%3D%22justify%22%3ESource%20%3A%20Programme%20TV.%3C%2Fp%3E%0D%0A%3C%2Fblockquote%3E%0D%0A%3Cp%20align%3D%22center%22%3E%0D%0A%3Cimg%20border%3D%220%22%20src%3D%22IMAGES%2Fspectres_exemples_2.jpg%22%20width%3D%22960%22%20height%3D%22720%22%3E%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3EUne%20jolie%20vid%E9o%2C%20bien%20didactique%2C%20lente%2C%20accessible%20%E0%20tous.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3E%C0%20voir%20%21%3C%2Fp%3E
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Les grandes dates de la science et de la technique : Lumière, optique, effet doppler, astronomie, et astrophysique : La découverte de la spectroscopie par Joseph Fraunhofer dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%3E%3Cu%3E%3Cb%3E%3Cfont%20size%3D%225%22%3ESynopsis%20%3A%3C%2Ffont%3E%3C%2Fb%3E%3C%2Fu%3E%3C%2Fp%3E%0D%0A%3Cblockquote%3E%0D%0A%09%3Cp%20align%3D%22justify%22%3EPourquoi%20peut-on%20produire%20de%20l%27%E9nergie%20%E0%20la%20fois%20par%20%0D%0A%09fusion%20et%20par%20fission%20nucl%E9aire%20%3F%3C%2Fp%3E%0D%0A%09%3Cp%20align%3D%22justify%22%3EQuelle%20est%20la%20diff%E9rence%20%3F%3C%2Fp%3E%0D%0A%09%3Cp%20align%3D%22justify%22%3EEst-ce%20qu%27on%20peut%20encha%EEner%20les%20deux%20%3F%3C%2Fp%3E%0D%0A%3C%2Fblockquote%3E%0D%0A%3Cp%20align%3D%22justify%22%3EUne%20vid%E9o%20tr%E8s%20didactique%2C%20accessible%20%E0%20tous%2C%20pour%20comprendre%20%0D%0Aces%20ph%E9nom%E8nes.%3C%2Fp%3E
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Physique quantique atomique : "Fusion vs Fission nucléaire" - Science étonnante dans la catégorie "Science & Technologie" |
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Must
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Les mystérieuses fentes de Young : une expérience étonnante de la physique quantique aux conséquences étranges et énigmatiques dans la catégorie "Science & Technologie" |
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Physique : "1915 : Einstein publie la théorie de la relativité générale" par Étienne Klein dans la catégorie "Science & Technologie" |
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Physique : "Existe-t-il un temps quantique ?", une interview avec Étienne Klein dans la catégorie "Science & Technologie" |
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Must
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État d'urgence et totalitarisme : un exemple flagrant d'abus et de violation des droits par une assignation à résidence et des persécutions de tous types, y compris physiques dans la catégorie "Droit, Justice, Police, et Mauvais traitements" |
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Physique quantique, relativité, et astrophysique : comment le LHC du CERN engendre des minis trous noirs (et l'immense possible danger qui en découle de disparition de l'Humanité et de la Terre toute entière) dans la catégorie "Science & Technologie" |
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Physique des ondes sonores et de la lumière : "L'effet Doppler en 2 minutes" par ScienceClic dans la catégorie "Science & Technologie" |
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Astrophysique : mythes et légendes autour des trous noirs, et réalité dans la catégorie "Science & Technologie" |
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Physique et relativité : "Peut-on voyager dans le temps ?", une conférence d'Étienne Klein - 14 Octobre 2008 dans la catégorie "Science & Technologie" |
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Physique quantique : l'électromagnétisme, la colle de l'Univers dans la catégorie "Science & Technologie" |
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Cosmologie et physique quantique : l'énigme de l'antimatière et la naissance de l'Univers dans la catégorie "Science & Technologie" |
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Nouvelle énigme en astronomie et en astrophysique : la fusion de trous noirs ne semble pas émettre d'ondes gravitationnelles et perturber la périodicité des signaux radio des pulsars dans la catégorie "Science & Technologie" |
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Astronomie et astrophysique : les sursauts gamma des étoiles, la mort venue du ciel dans la catégorie "Science & Technologie" |
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Astronomie et astrophysique de la vie et de la mort des étoiles : séquence principale, géantes rouges, naine blanches, supernovae, et trous noirs dans la catégorie "Science & Technologie" |
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Physique, mathématiques, et informatique : "Déterminisme et imprédictibilité" par Hervé Zwirn Festival d'astronomie de Fleurance - Août 2013 dans la catégorie "Science & Technologie" |
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Histoire de la physique :"La révolution quantique" par Étienne Klein dans la catégorie "Science & Technologie" |
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Gravitation, relativité, et physique quantique : Jean-Pierre Luminet sur l'évaporation des micro trous noirs et le rayonnement de (Stephen) Hawking dans la catégorie "Science & Technologie" |
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Exploration spatiale : l'EmDrive, un moteur spatial révolutionnaire sans carburant testé par la NASA qui défie les lois de la physique [MAJ le 6 AVril 2021] : le mystère est résolu dans la catégorie "Science & Technologie" |
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"La physique moderne : de quoi Galilée est-il le nom ?" par Étienne Klein dans la catégorie "Science & Technologie" |
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11 Septembre 2001 : y-a-t'il eu vraiment des avions ayant percuté les 2 tours du WTC ? Quelques considérations intéressantes de physique dans la catégorie "Attentats du 11 Septembre 2001" |
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"CERN" : le plus grand centre du monde d'étude des particules et de la physique quantique (LHC) dans la catégorie "Science & Technologie" |
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Découverte en physique quantique : des scientifiques confirment l'existence de l'élément 117 du tableau périodique, l'ununseptium - Mai 2014 dans la catégorie "Science & Technologie" |
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"La vérité : la physique quantique à l'épreuve de l'expérience" par Alain Aspect - Toulouse - 3 Avril 2013 dans la catégorie "Science & Technologie" |
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Alain Aspect : un petit résumé du parcours du physicien ayant démontré la réalité de l'intrication quantique dans la catégorie "Science & Technologie" |
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Des explications didactiques sur la relativité et la physique quantique à partir des travaux de Maxwell, Planck, Bohr, Einstein, Schrodinger, Heisenberg, Dirac, etc. dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%3ECette%20vid%E9o%20n%27a%20pas%20encore%20%E9t%E9%20%E9valu%E9e.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3E%3Cb%3ENota%20Bene%20%3A%20pour%20une%20meilleur%20confort%20auditif%2C%20j%27ai%20%0D%0Arehauss%E9%20le%20son%20de%20cette%20vid%E9o%20de%2030%25.%3C%2Fb%3E%3C%2Fp%3E
Évaluée
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"Albert Einstein, escroc ou mythomane ?" et les découvertes de Poincaré avec Dean Manas, docteur en physique nucléaire - Radio Courtoisie - 8 Mai 1991 dans la catégorie "Science & Technologie" |
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Astrophysique : les ceintures de Van Allen dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%3ECette%20courte%20animation%20nous%20explique%20simplement%20et%20avec%20brio%20%0D%0Apourquoi%20il%20est%20important%20de%20d%E9tenir%20de%20l%27or%20physique%20dans%20le%20contexte%20%0D%0A%E9conomique%20actuel%2C%20et%20pourquoi%20le%20prix%20actuel%20de%20l%27or%20ne%20refl%E8te%20pas%20la%20vraie%20%0D%0Avaleur%20de%20l%27or.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3EGr%E2ce%20%E0%20l%27exemple%20du%20naufrage%20du%20Titanic%2C%20chacun%20va%20pouvoir%20%0D%0Acomprendre%20pourquoi%20il%20est%20urgent%20et%20essentiel%20de%20d%E9tenir%20de%20l%27or%20physique.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3E%C0%20voir%20%21%3C%2Fp%3E
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Or, Titanic et canots de sauvetage : pourquoi il est essentiel de détenir de l'or physique dans la catégorie "Argent, Banques, États, et Organisations mondiales" |
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Must
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"La physique nucléaire" : vallée de stabilité, désintégrations en cascade, radioactivité, noyaux et nucléons dans la catégorie "Science & Technologie" |
Encore%20un%20joli%20sketch%2C%20surtout%20la%20fin.%3Cp%3E%3Cb%3ENota%20Bene%20%3A%20pour%20obtenir%20la%20liste%20de%20toutes%20les%20vid%E9os%20de%20Norman%2C%20cliquez%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3Ftitre%3DNorman%2520%253A%2520%26mode%3Dliste%22%3E%0D%0A%5Bici%5D%3C%2Fa%3E.%3C%2Fb%3E%3C%2Fp%3E
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Norman : "Le physique des gens" dans la catégorie "Curiosités, Arts, Humour, et Divertissement" |
100%20ans%20apr%E8s%20sa%20d%E9couverte%2C%20la%20supraconductivit%E9%20continue%20%E0%20fasciner%20et%20donne%20plus%20en%20plus%20de%20fil%20%E0%20retordre%20aux%20scientifiques.%20Comment%20se%20fait-il%20que%20l%27humanit%E9%2C%20qui%20sait%20expliquer%20ce%20qui%20se%20passe%20%E0%20des%20millions%20d%27ann%E9es-lumi%E8re%20loin%20de%20la%20Terre%2C%20qui%20progresse%20%E0%20grand%20pas%20dans%20la%20compr%E9hension%20du%20monde%20de%20l%27infiniment%20petit%2C%20pi%E9tine%20depuis%20si%20longtemps%20devant%20l%27%E9nigme%20de%20la%20supraconductivit%E9%20%3F%3Cbr%3E%3Cbr%3EMais%20au%20fait%2C%20qu%27est-ce%20que%20la%20supraconductivit%E9%20%3F%0D%0ARefroidis%20%E0%20des%20temp%E9ratures%20extr%EAmes%2C%20pr%E8s%20du%20z%E9ro%20absolu%20%28-273%2C15%20%B0C%29%2C%20certains%20mat%E9riaux%20conducteurs%20acqui%E8rent%20de%20surprenantes%20propri%E9t%E9s%2C%20li%E9es%20%E0%20la%20physique%20quantique%20%3A%20ils%20n%27opposent%20plus%20aucune%20r%E9sistance%20au%20passage%20du%20courant%20%E9lectrique--%20ils%20deviennent%20supraconducteurs%20--%20et%20excluent%20tout%20champ%20magn%E9tique%20%E0%20proximit%E9.%3Cbr%3E%3Cbr%3EVid%E9o%20non%20%E9valu%E9e.%0D%0A%3Cp%20align%3D%22justify%22%3E%3Cb%3ENota%20Bene%20%3A%20pour%20afficher%20la%20liste%20de%20toutes%20les%20vid%E9os%20de%20%0D%0Ace%20site%20sur%20la%20%26quot%3B%3Cfont%20color%3D%22%23FF0000%22%3E%3Ci%3Esupraconductivit%E9%3C%2Fi%3E%3C%2Ffont%3E%26quot%3B%2C%20cliquez%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3Ftitre%3Dsupraconduct%26mode%3Dliste%22%3E%5Bici%5D%3C%2Fa%3E.%3C%2Fb%3E%3C%2Fp%3E
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"La physique : à la découverte de la supraconductivité" par Dimitri Roditchev - 8 Décembre 2011 dans la catégorie "Science & Technologie" |
Un%20sketch%20original.
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Alexandre Astier : "La physique quantique" dans la catégorie "Curiosités, Arts, Humour, et Divertissement" |
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Évaluée
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"Physique et Cosmologie" par François Bouchet dans la catégorie "Science & Technologie" |
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Conférence Nassim Haramein à la libraire métaphysique de la vallée de Rogue - 2003 dans la catégorie "Sciences alternatives" |
Voici%20une%20courte%20vid%E9o%20qui%20explique%20les%20d%E9buts%20de%20la%20physique%20quantique%2C%20cette%20physique%20de%20l%27infiniment%20petit%20o%F9%20l%27%E9nergie%20est%20transport%E9e%20sous%20la%20forme%20de%20paquets%20ou%20%22Quantas%22%20d%27%E9nergie.%3Cp%20align%3Dcenter%3E%3Cimg%20border%3D%220%22%20src%3D%22IMAGES%2FExclusivit%E9%2520mondiale%2520BlueMan%2520-%2520Bandeau.jpg%22%3E%3C%2Fp%3E
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"L'origine de la physique quantique" dans la catégorie "Science & Technologie" |
Une%20petite%20vid%E9o%20bien%20con%E7ue%20qui%20r%E9sume%20les%20exploits%20du%20tr%E8s%20grand%20savant%20Poincar%E9.
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Henri Poincaré, génie des mathématiques et de la physique dans la catégorie "Science & Technologie" |
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"La physique en une minute - Qu'est-ce qu'un Neutrino ?" ou une particule bien difficile à détecter dans la catégorie "Science & Technologie" |
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"La physique en une minute - Comment marchent les lasers ? (en théorie)" dans la catégorie "Science & Technologie" |
Une%20conf%E9rence%20tr%E8s%20int%E9ressante%20par%20certains%20c%F4t%E9s%20%28les%20exemples%20de%20synchronis%E9es%20donn%E9s%20notamment%29%2C%20mais%20qui%20aurait%20pu%20%EAtre%20plus%20claire%2C%20en%20particulier%20la%20fin%20qui%20est%20un%20peu%20fumeuse%2C%20et%20mal%20expliqu%E9e.%3Cp%3E%3Cb%3ENota%20Bene%20%3A%20pour%20afficher%20la%20liste%20de%20toutes%20les%20vid%E9os%20de%20la%20s%E9rie%20de%20mini-conf%E9rences%20%26quot%3B%3Ci%3ETEDx%3C%2Fi%3E%26quot%3B%20disponibles%20sur%20ce%20site%2C%20cliquez%0D%0A%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3Ftitre%3DTEDx%26mode%3Dliste%22%3E%0D%0A%5Bici%5D%3C%2Fa%3E.%3C%2Fb%3E%3C%2Fp%3E
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"Une théorie de Tout (le reste)" ou les coïncidences et la physique de l'information - Par Jacques Vallée à TEDx Bruxelles le 22 Novembre 2011 dans la catégorie "Science & Technologie" |
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Le physicien américain Steven Jones explique sa découverte de la nanothermite dans les poussières du WTC dans la catégorie "Attentats du 11 Septembre 2001" |
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Physique quantique : les 10 dimensions et la théorie des supercordes dans la catégorie "Science & Technologie" |
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Adrian Douglas du GATA : "Il existe 100 fois plus d'or papier que d'or physique bien réel..." dans la catégorie "Argent, Banques, États, et Organisations mondiales" |
%22%3Ci%3ENot%20Tetris%3C%2Fi%3E%22%20est%20une%20version%20du%20c%E9l%E8bre%20jeu%20classique%20%22%3Ci%3ETetris%3C%2Fi%3E%22%2C%20mais%20avec%20une%20grande%20diff%E9rence%20%3A%20il%20utilise%20les%20lois%20de%20la%20physique...%3Cbr%3E%3Cbr%3ECela%20signifie%20en%20particulier%20qu%27il%20est%20vraiment%20difficile%2C%20voire%20impossible%2C%20d%27effacer%20une%20seule%20ligne%2C%20et%20encore%20plus%20improbable%20de%20faire%20un%20%22Tetris%22%20%28d%E9truire%204%20lignes%20d%27un%20coup%29.%3Cbr%3E%3Cbr%3EHilarant%2C%20surtout%20vers%20la%20fin.
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"Not Tetris", le jeu "Tetris" mais avec les lois réelles de la physique dans la catégorie "Jeux vidéos" |
%3Cp%20align%3D%22justify%22%3ECette%20vid%E9o%20illustre%20l%27effet%20Coanda%20%E0%20partir%20un%20flux%2C%20ici%0D%0Ade%20l%27eau%2C%20et%20une%20petite%20cuill%E8re%20en%20plastique.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3E%3Cb%3E%3Cu%3E%3Cfont%20size%3D%225%22%3ED%E9finition%20%3A%3C%2Ffont%3E%3C%2Fu%3E%3C%2Fb%3E%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%20style%3D%22margin-left%3A%2020%22%3EL%92effet%20Coanda%20est%20un%20ph%E9nom%E8ne%20a%E9raulique%20propre%20au%20soufflage%20ou%20la%20diffusion%20de%20l%92air%20pr%E8s%20d%92une%20paroi%20horizontale%20tel%20un%20plafond.%20La%20vitesse%20de%20l%92air%20via%20une%20bouche%20ou%20une%20grille%20de%20soufflage%20cr%E9e%20une%20acc%E9l%E9ration%20et%20un%20%AB%20plaquage%20%BB%20du%20flux%20d%92air%20contre%20le%20plafond.%20Le%20flux%20d%92air%20se%20colle%20presque%20au%20plafond%0D%0Aentra%EEnant%20%E9galement%20des%20flux%20d%92air%20induits%20dit%20induction.%20Cet%20effet%20Coanda%20ou%20ph%E9nom%E8ne%20de%20flux%20plaqu%E9%20n%92appara%EEt%20que%20les%20premiers%20m%E8tres%20et%20s%92estompe%20peu%20%E0%20peu.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%20style%3D%22margin-left%3A%2020%22%3EIl%20s%27agit%20l%E0%20en%20r%E9alit%E9%20du%0D%0Aprincipe%20m%EAme%20de%20la%20sustentation%20des%20ailes%20aux%20formes%20arrondies%20qui%20forment%20une%0D%0Ad%E9pression%20sur%20le%20haut%20des%20ailes%20provoquant%20ainsi%20l%27%E9l%E9vation.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%20style%3D%22margin-left%3A%2020%22%3EC%27est%20un%20bien%20%E9trange%20ph%E9nom%E8ne%20de%20la%20m%E9canique%20des%20fluides%2C%20d%E9couvert%20par%20hasard%20%E0%20la%20suite%20d%27un%20contretemps%20lors%20d%27une%20exp%E9rience%20d%27a%E9ronautique%2C%20par%20l%27ing%E9nieur%20a%E9rodynamicien%20roumain%20Henri%20Coanda%20%281886-1972%29%2C%20qui%20lui%20donna%20son%20nom.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0AHenri%20Coanda%20est%20reconnu%20aujourd%27hui%20comme%20%E9tant%20le%20p%E8re%20du%20principe%20des%20avions%20%E0%20r%E9action%2C%20et%20ses%20travaux%20ont%20%E9t%E9%20tr%E8s%20t%F4t%20r%E9cup%E9r%E9s%20par%20les%20nazis%20%28et%20qui%20ont%20abouti%20au%20fus%E9es%20V1%20et%20V2%29.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0AL%27effet%20Coanda%20%E0%20proprement%20parler%20se%20pr%E9sente%20de%20la%20mani%E8re%20suivante%20%3A%20lorsqu%27un%20fluide%20%28gaz%20ou%20liquide%29%20sort%20d%27un%20r%E9cipient%20par%20un%20orifice%20ou%20un%20tuyau%2C%20une%20partie%20de%20ce%20fluide%20a%20tendance%2C%20au%20moment%20o%F9%20il%20%E9merge%2C%20%E0%20%E9pouser%20intimement%20le%20contour%20ext%E9rieur%20du%20r%E9cipient%2C%20m%EAme%20s%27il%20lui%20faut%20pour%20cela%2C%20faire%20un%20%22virage%20en%20%E9pingle%20%E0%20cheveux%22.%20L%27exemple%20le%20plus%20courant%20de%20l%27effet%20Coanda%20est%20la%20fa%E7on%20malencontreuse%20dont%20le%20th%E9%20s%27%E9coule%20d%27une%20th%E9i%E8re%20lorsqu%27on%20n%27incline%20pas%20assez%20le%20bec%20verseur%20%3A%20le%20th%E9%20sort%20bien%20de%20la%20th%E9i%E8re%2C%20mais%20le%20jet%20adh%E8re%20%E0%20la%20paroi%20ext%E9rieure%20pour%20s%27%E9goutter%20finalement%20ailleurs%20que%20dans%20la%20tasse%20o%F9%20il%20%E9tait%20cens%E9%20arriver%2C%20c%27est%20donc%20l%27effet%20Coanda%20qui%20se%20manifeste%20tout%20comme%20Monsieur%20Jourdain%20fait%20de%20la%20prose%20sans%20le%20savoir.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0AL%27existence%20de%20ce%20ph%E9nom%E8ne%20d%E9pend%20%E9troitement%20de%20quelques%20param%E8tres%20cruciaux%2C%20parmi%20lesquels%20on%20peut%20citer%20la%20vitesse%20d%27%E9coulement%20du%20jet%2C%20l%27intensit%E9%20de%20son%20d%E9bit%20et%20le%20profil%20exact%20de%20l%27ajutage%20de%20sortie.%20Autrement%20dit%2C%20lorsque%20l%27effet%20Coanda%20se%20manifeste%20%E0%20la%20sortie%20d%27une%20th%E9i%E8re%2C%20il%20suffit%20d%27augmenter%20le%20d%E9bit%20du%20th%E9%20pour%20faire%20cesser%20le%20ph%E9nom%E8ne.%3Cbr%3E%0D%0A%3Cbr%3E%0D%0AL%27effet%20Coanda%2C%20qui%20peut%20d%27ailleurs%20avoir%20des%20cons%E9quences%20b%E9n%E9fiques%20dans%20certaines%20circonstances%2C%20s%27exerce%20aussi%2C%20et%20m%EAme%20plus%20fortement%20encore%2C%20dans%20le%20domaine%20des%20%E9coulements%20gazeux%2C%20en%20particulier%20en%20a%E9rodynamique%2C%20o%F9%20il%20peut%20donner%20lieu%20%E0%20des%20effets%20tr%E8s%20importants%20en%20raison%20d%27un%20ph%E9nom%E8ne%20d%27entra%EEnement%20exerc%E9%20sur%20l%27air%20environnant.%20Cet%20entra%EEnement%20peut%20mettre%20en%20jeu%20des%20quantit%E9s%20d%27air%20suffisantes%20pour%20donner%20lieu%20%E0%20des%20applications%20pratiques.%20C%27est%20ainsi%20que%20dans%20un%20certain%20type%20de%20v%E9hicule%20%E0%20coussin%20d%27air%2C%20un%20courant%20d%27air%20est%20%E9ject%E9%20vers%20le%20haut%20%28et%20non%20vers%20le%20bas%2C%20comme%20dans%20les%20v%E9hicules%20%E0%20coussin%20d%27air%20conventionnels%29%20a%20travers%20une%20fente%20annulaire%20dispos%E9e%20au%20sommet%20du%20v%E9hicule.%20Ce%20jet%20d%27air%2C%20apr%E8s%20%EAtre%20sorti%20vers%20le%20haut%2C%20subit%20l%27effet%20Coanda%20et%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Physique : le méconnu effet Coanda dans la catégorie "Science & Technologie" |
%3Cp%3EQuelques%20images%20qu%27on%20voit%20plut%F4t%20rarement...%3C%2Fp%3E
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Histoire de la terre et géophysique de la dérive des continents : 650 millions d'années, en 1 minute et 14 secondes... dans la catégorie "Science & Technologie" |
Cette%20vid%E9o%20est%20une%20cr%E9ation%20d%27amateur%20qui%20aborde%20la%20question%20fondamentale%20des%0D%0Aperceptions%2C%20et%20de%20la%20r%E9alit%E9%20objective%20du%20monde.%0D%0A%3Cp%3EQue%20savons%20nous%20de%20l%27Univers%20%3F%20%3A%20juste%20ce%20que%20usuellement%20nous%20en%0D%0Apercevons%20par%20nos%205%20sens%2C%20et%20les%20conceptions%20et%20th%E9ories%20que%20nous%20%E9laborons%20%E0%0D%0Apartir%20d%27elles...%3C%2Fp%3E%0D%0A%3Cp%3ENous%20ne%20voyons%20pas%20la%20r%E9alit%E9%2C%20mais%20son%20ombre%2C%20son%20reflet%2C%20qui%20sont%20une%0D%0Aimage%20illusoire%2C%20partielle%2C%20et%20ultra%20pauvre%20de%20cette%20r%E9alit%E9.%3C%2Fp%3E%0D%0A%3Cp%3EUne%20cr%E9ation%20d%27amateur%20intelligente%2C%20id%E9ale%20pour%20s%27initier%20aux%20notions%20de%0D%0Aperceptions%2C%20de%20concept%2C%20et%20de%20r%E9alit%E9.%20%C0%20voir.%3C%2Fp%3E%0D%0A%3Cp%3E%3Cb%3ENota%20Bene%20%3A%20sur%20le%20m%EAme%20sujet%2C%20et%20comme%20le%20recommande%20aussi%20la%20vid%E9o%20%E0%0D%0Ala%20fin%2C%20voyez%20%E9galement%20%22%3Ci%3EWhat%20the%20bleep%20do%20we%20know%26nbsp%3B%3F%3C%2Fi%3E%26quot%3B%20%28%22%3Ci%3EQue%20savons-nous%20de%20la%20r%E9alit%E9%20%3F%3C%2Fi%3E%26quot%3B%29%2C%0D%0Aune%20vid%E9o%20visible%20aussi%20sur%20ce%20site%2C%20%3Ca%20href%3D%22https%3A%2F%2Fwww.blueman.name%2FDes_Videos_Remarquables.php%3FNumVideo%3D76%22%3E%5Bici%5D%3C%2Fa%3E.%3C%2Fb%3E%3C%2Fp%3E
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Physique quantique : ce que l'on perçoit, et la réalité dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%3ECette%20courte%20vid%E9o%20est%20un%20entretien%20donn%E9%20par%20Dean%20Radin%2C%20docteur%20en%20psychologie%20et%20ing%E9nieur%2C%20l%92un%20des%20principaux%20chercheurs%20de%20l%27Institut%20des%20Sciences%20No%E9tiques%20depuis%202001%2C%20le%20mot%20%22no%E9tique%22%20venant%20du%20grec%20ancien%20%22no%FBs%27%2C%20et%20signifiant%20%22esprit%22.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3EDu%20point%20de%20vue%20de%20la%20physique%20quantique%2C%20la%20mati%E8re%2C%20et%20par%20cons%E9quent%20le%20monde%20et%20l%27Univers%20tels%20que%20nous%20les%20connaissons%2C%20n%27existent%20pas%20en%20r%E9alit%E9.%20En%20effet%2C%20ce%20qui%20semble%20constituer%20notre%20monde%2C%20c%27est%20l%27information%20et%20la%20connaissance.%20Ainsi%2C%20plus%20les%20particules%20sont%20examin%E9es%2C%20et%20scrut%E9es%20profond%E9ment%2C%20plus%20l%27on%20se%20rend%20compte%20que%20la%20dite%20particule%20n%27existe%20pas%20en%20tant%20qu%27%E9l%E9ment%20autonome%20tangible%20et%20palpable%2C%20mais%20seulement%20en%20tant%20qu%27%E9nergie%2C%20et%20en%20tant%20que%20relation%20avec%20d%27autres%20particules%20et%20m%EAme%20avec%20l%27Univers%20dans%20son%20ensemble.%20C%27est%20un%20des%20aspects%20de%20%22l%27%E9tranget%E9%20quantique%22%2C%20cet%20univers%20de%20l%27infiniment%20petit%20o%F9%20les%20notions%20de%20temps%2C%20de%20%0D%0Alocalisation%2C%20et%20m%EAme%20les%20lois%2C%20sont%20compl%E8tement%20diff%E9rentes%20et%20%E9tranges%20par%20rapport%20de%20celles%20que%20nous%20connaissons%20%E0%20notre%20%E9chelle%20dite%20macroscopique.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3EUn%20document%20id%E9al%20pour%20commencer%20%E0%20se%20familiariser%20avec%20l%27univers%20quantique.%3C%2Fp%3E
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L'intangibilité de l'Univers selon le point de vue de la physique quantique dans la catégorie "Science & Technologie" |
%3Cp%20align%3D%22justify%22%3EVoil%E0%20une%20belle%20vid%E9o%20qui%20nous%20explique%20la%20dualit%E9%20onde%2Fcorpuscule%20sous%20la%20forme%20d%27un%20dessin%20anim%E9%20avec%20le%20personnage%20%22%3Ci%3EDr%20Quantum%3C%2Fi%3E%22.%3C%2Fp%3E%0D%0A%3Cp%20align%3D%22justify%22%3ELe%20genre%20de%20vid%E9o%20didactique%20qu%27on%20aimerait%20voir%20plus%20souvent...%3C%2Fp%3E
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Physique quantique : l'expérience des fentes de Young expliquée par "Docteur Quantum" dans la catégorie "Science & Technologie" |