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Old 6.10.2006   #1
RavenakCZE
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Default Zajímavosti: (v?da, technika, astro, život, sv?t,fyzika...)
Jak by mohl vypadat pr?let ?ernou dírou.

Po?íta?ová simulace > http://www.21stoleti.cz/view.php?cisloclanku=2006030201
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Old 6.10.2006   #2
Kada
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Odvaznej kanoista...
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Old 6.10.2006   #3
RavenakCZE
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Gravitacni simulator

http://www.aldebaran.cz/applets/fy_grav/start.html
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Old 9.10.2006   #4
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Super tabule.
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Old 9.10.2006   #5
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hej, tak to je naprosto super
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Old 9.10.2006   #6
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wow... s tim bych si vydrzel hrat hodne dlouho
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Old 10.10.2006   #7
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Pripomina mi to "The Incredible Machine" TiM.

Zajímalo by m? jen praktické využití.
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Old 10.10.2006   #8
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Originally Posted by Kada View Post

tak s tímhle by m? bývala byla fyzika možná i bavila. jestli si pamatujete tu reklamu na tuším hondu... kde po stole jede kuli?ka, str?í do ventilátoru ten zase pošoupne n?co dál atd... tak tohle by zabavilo na dlouhé a dlouhé hodiny
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Old 10.10.2006   #9
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podobnou tabuli požíváme ve škole (na základce) ale nemáme tam ten soft
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Old 10.10.2006   #10
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podobnou tabuli požíváme ve škole (na základce) ale nemáme tam ten soft
to zase my na fakulte mame nieco take podobne, asi 2 x 1,5 metra, aj so softom
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Old 11.10.2006   #11
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Quote:
Originally Posted by malicek View Post
podobnou tabuli požíváme ve škole (na základce) ale nemáme tam ten soft
Není to naáhodou interaktivní tabule E-Beam ? http://www.e-beam.com/
Pracoval jsem s n??ím podobným, když to bylo ješt? ve vývoji.
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Old 15.10.2006   #12
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Ze ste to vy, tak sem vam to nasel. Rozpoznavani tech objektu po nakresleni vyviji jako jeden z projektu na MIT. Simulacni software je Working Model 2D. Jaky je pouzity hardware na tabuli netusim.
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Old 15.10.2006   #13
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Heh, no afaik bylo dokázáno, že rychlosti sv?tla se lze p?iblížit, ale nelze ji p?ekonat...

A stojím si za tím, že je to aproximace. Což nic ne?íká o tom, že by se (ne)dala použít v reálném sv?t? - dá, protože je to dobrá aproximace.
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Old 15.10.2006   #14
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kazda teorie je v podstate aproximace... jde jen o to jak presna...

newtonova teorie porad plati, ale jenom pro urcitej rozsah parametru - odchylky zpusobeny zakrivenim casoprostoru jsou naprosto zanedbatelny, kdyz se pokousime treba dostat satelit na obeznou drahu...

stejne tak teorie relativity... pro popis makrosveta staci, ale kdyz chceme popsat jak funguji atomy, teorie relativity uz nestaci a musi se doplnit kvantovou mechanikou...

ze teorie relativity plati, se da zjistit treba podle toho jak nejaky hmotny objekt ve vesmiru zakrivuje svetlo ktery kolem nej prochazi... myslim ze i to ze cas plyne pomalu v rychle se pohybujicim objektu bylo experimentalne dokazany...

btw.. teorie co se pokousi popsat vesmir presneji nez teorie relativity existuji, ale vetsinou se o nich moc nevi... nejkompletnejsi je asi Heimova teorie
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Old 17.10.2006   #15
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http://www.breathingearth.net/
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Old 10.11.2007   #16
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Pravda (???) o 11.zá?í 2001. ?ím nás tedy "KRMÍ" v médiích?
http://video.google.com/videoplay?do...57841553891683
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Old 10.11.2007   #17
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Pravda (???) o 11.zá?í 2001. ?ím nás tedy "KRMÍ" v médiích?
http://video.google.com/videoplay?do...57841553891683
Zajímavý Uz jsem v p?lce
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Old 10.11.2007   #18
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OMG, opet. Objevuje se to tu aspon po pate a jako vzdy napisu, ze Loose Change je podle myho pekne umelecky zpracovana kravina.
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Old 27.12.2007   #19
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r/c model Mig-29 s vektorovými turbínami a skv?lou ukázkou pilotáže

http://www.youtube.com/watch?v=sFypnPK1dPU

tohle mi p?ipom?lo mojí jizvu na hlav?:
http://www.youtube.com/watch?v=Fs31uKdk4Sk
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Old 27.12.2007   #20
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Quote:
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tohle mi p?ipom?lo mojí jizvu na hlav?:
http://www.youtube.com/watch?v=Fs31uKdk4Sk
podobnych videi som uz videl plno, len nechapem preco tie lietadla vzdy trafia ludi hned do hlavy po starte
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