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Category: Science
Date: 10/21/05 02:09 AM

49 Responses to E = MC2 Explained

  1. Profile photo of buddy
    buddy Male 30-39
    10116 posts
    October 20, 2005 at 10:38 pm
    Link: E = MC2 Explained - Now do you get it? Me neither.
  2. Profile photo of dmcfan
    dmcfan Male 13-17
    158 posts
    October 20, 2005 at 10:56 pm
    It actualy makes sense now :-O
  3. Profile photo of theBSR
    theBSR Male 30-39
    992 posts
    October 21, 2005 at 2:19 am
    OOOOOOOOOOOOOOOOOOOOOOOOOHHHHHHH!!!!! uh what??!!!
  4. Profile photo of mr_genius
    mr_genius Male 18-29
    209 posts
    October 21, 2005 at 2:35 am
    i already knew all of that
  5. Profile photo of Akajune
    Akajune Male 18-29
    149 posts
    October 21, 2005 at 2:51 am
    Michio Kaku is king
  6. Profile photo of geckosrock
    geckosrock Male 13-17
    979 posts
    October 21, 2005 at 3:00 am
    i agree akajune, he rocks! Im confused still. so energy is matter? or what? huh?
  7. Profile photo of whatup09
    whatup09 Male 18-29
    169 posts
    October 21, 2005 at 3:03 am
    its not too hard. energy equals any mass times the speed of light scared. einstein said that if one were to travel at the speed of light, time would come to a stop in that instance. at the same time, any mass could be transferred into energy. think about the atomic bomb. the uranium inside the bomb is converted into a great amount of energy using the same formula. btw, im posting this before i even look at that site. im gonna take a gander now.
  8. Profile photo of Obeast
    Obeast Male 13-17
    65 posts
    October 21, 2005 at 3:26 am
    Bah, begone with your Jewish physics.
  9. Profile photo of geckosrock
    geckosrock Male 13-17
    979 posts
    October 21, 2005 at 3:28 am
    lmao Obeast
  10. Profile photo of Nacaz2
    Nacaz2 Male 13-17
    821 posts
    October 21, 2005 at 3:59 am
    man they are some cool cats
  11. Profile photo of manorrd
    manorrd Male 30-39
    2372 posts
    October 21, 2005 at 6:12 am
    Knowing what we know now, the concept isn`t mind bendingly difficult.

    However, back when Einstein first published this theory, no one had ever made the connection between matter (this paperweight on my desk) to enery (unleashing this paperweight`s energy will kick major ass).

    He was the first.

  12. Profile photo of S_J_W
    S_J_W Male 18-29
    1465 posts
    October 21, 2005 at 6:29 am
    "said that if one were to travel at the speed of light, time would come to a stop in that instance"

    Of course it’s all theoretical considering that as an object approaches the speed of light, it’s mass expands infinitely meaning that no mater how much thrust is applied, it will never be enough to propel the object to true light speed. I like to think of the speed of light as natures little speed limit. However, it has been shown that time slows down slightly even at sonic and subsonic speeds. But this is all special relativity. E=mc2 is more of an energy conversion formula. It predicts energy the yield of mater. Something that was instrumental in the creation of the A-bomb. Anywho, this was a cool post since I have a hard time explaining the theories to people who aren’t all that into physics.

  13. Profile photo of Jaga
    Jaga Male 18-29
    22 posts
    October 21, 2005 at 8:07 am
    hah, this is sort of humerous
  14. Profile photo of gotribe06
    gotribe06 Male 18-29
    99 posts
    October 21, 2005 at 8:08 am
    I learned about about this in Chem. II last year, so I didn`t bother to watch the videos.
  15. Profile photo of heidi_dunno
    heidi_dunno Female 13-17
    31 posts
    October 21, 2005 at 8:16 am
    u wot.... im really confused now
  16. Profile photo of aidious
    aidious Male 18-29
    348 posts
    October 21, 2005 at 8:21 am
    LOL Americans sound dum
  17. Profile photo of S_J_W
    S_J_W Male 18-29
    1465 posts
    October 21, 2005 at 8:59 am
    "LOL Americans sound dum"

    Nice attitude, and eloquently put, Voltaire...

  18. Profile photo of YevraHNairB
    YevraHNairB Male 18-29
    579 posts
    October 21, 2005 at 9:24 am
    Janet Conrad Experimental Physicist Columbia University

    "For me there`s a lot more to the equation than E = mc2."

    ....yeeeeaaaahhhhh

  19. Profile photo of f1r35t0rm
    f1r35t0rm Male 18-29
    329 posts
    October 21, 2005 at 9:26 am
    personally i recall the animaniac`s episode where they meet einstein when he is developing the theory of relativity and they begin to spell acme, and then wakko spells it backwards e mc a, but his a looks like a 2, so einstein then has a revelation and thus became the theory of relativity
  20. Profile photo of rosie223366
    rosie223366 Female 13-17
    207 posts
    October 21, 2005 at 10:12 am
    im not even going to listen to it. it will no doubt make my brain explode.
  21. Profile photo of perfectly_me
    perfectly_me Female 13-17
    314 posts
    October 21, 2005 at 10:26 am
    Ya`ll scare the crap out of me.
  22. Profile photo of mookie427
    mookie427 Male 13-17
    517 posts
    October 21, 2005 at 10:40 am
    gaaah! i`ve already had 2 science lessons today.......
  23. Profile photo of madmax11
    madmax11 Male 18-29
    733 posts
    October 21, 2005 at 11:43 am
    lol - haha! NERDS!
    that makes sense i suppose...
  24. Profile photo of blackmind
    blackmind Male 13-17
    696 posts
    October 21, 2005 at 12:39 pm
    so what if we`re nerds?
    IM A NERD AND PROUD OF IT!!!
    btw sjw nice explination.
    i couldnt have said it beter myself
  25. Profile photo of pal666
    pal666 Male 13-17
    1061 posts
    October 21, 2005 at 2:08 pm
    ok then...
  26. Profile photo of Ribs
    Ribs Male 18-29
    45 posts
    October 21, 2005 at 2:35 pm
    Whatup09: You have no idea what you`re talking about. At all.
  27. Profile photo of tedweird
    tedweird Male 18-29
    298 posts
    October 21, 2005 at 5:17 pm
    it made sense before. Buddy, ur a dumbass.
  28. Profile photo of jimbodahobo
    jimbodahobo Male 13-17
    371 posts
    October 21, 2005 at 5:24 pm
    i get it but i got it before this so...doesnt really matter(haha thats a crappy pun)
  29. Profile photo of Naoscaire
    Naoscaire Male 18-29
    571 posts
    October 21, 2005 at 5:48 pm
    I knew all this from when I studied physics in secondary school (high school for you Americans), it made me see things in a different light and after I left the army I started wearing pseudo-intellect glasses even though it was completely un-necessary. It made me look smart... Well the moral of this story is that if you were pseudo-intellect glasses during a tae kwon do sparring you will probably end up in hospital. Truly tragic...
  30. Profile photo of for_serious?
    for_serious? Female 13-17
    1403 posts
    October 21, 2005 at 6:20 pm
    My heaaaaaaaad....owwwwwww. I`m too dumb :-(
    And Tedweird, before you call anyone a dumbass spell "you`re" right. And Buddy isn`t a dumbass, if it weren`t for him, I would have no i-am-bored.com and then I would die.
  31. Profile photo of TeaBaggins
    TeaBaggins Male 18-29
    126 posts
    October 21, 2005 at 7:23 pm
    Alot of dumb people in the forums.
  32. Profile photo of Ribs
    Ribs Male 18-29
    45 posts
    October 21, 2005 at 7:24 pm
    "Alot" is not a word.
  33. Profile photo of IWillRmbrYou
    IWillRmbrYou Female 13-17
    57 posts
    October 21, 2005 at 9:27 pm
    And you don`t know how to spell isn`t...
  34. Profile photo of mooseyfate
    mooseyfate Male 13-17
    851 posts
    October 21, 2005 at 10:36 pm
    heheh
    everyone`s trying to smart
    it is a simple concept though
    so here`s a hard one:
    time does not exist, it is merely an illusion created by our minds because of their inability to perceive all instances of being at once
  35. Profile photo of Ribs
    Ribs Male 18-29
    45 posts
    October 21, 2005 at 11:02 pm
    IWillRm(m)brYou: if you think "isn`t" is the correct spelling of "is not," you are an idiot.

    I`m sorry; I meant: "...you`re an idiot."

  36. Profile photo of Maelstrom_x
    Maelstrom_x Male 18-29
    1883 posts
    October 21, 2005 at 11:43 pm
    Very interesting.

    My question is, if one were to travel at the true speed of light, and time were to supposedly stop, then it should be impossible for actual light to reach the speed of light. I mean, if time stopped, you could move an infinite amount of distance in zero time, thus achieving an infinite speed. In fact, moving ANY distance whatsoever while time is stopped would equal infinite speed (divide one mile by zero time, the only explanation of the result would be that it simply transported there instantly, meaning infinite speed.)

    But, light isn`t instantaneous. If it were, we could see stars disappear the second they die, and not thousands of years after their deaths.

    I think one of the people said that flashing a light from a train moving 100 MPH wouldn`t increase the speed of the rays of light because the speed of light mutates the variables for speed (distance and time).

    My head hurts... lol... Physics is a very interesting topic.

  37. Profile photo of Bucher
    Bucher Male 18-29
    774 posts
    October 21, 2005 at 11:54 pm
    i havent looked at this from what i know, its the MAXIMUM measure of energy that can be given out by something, i dont know how you can get that energy, but get something going lightspeed as mentioned above? and SJW is right in order to propel something lightspeed, you must move it with some that can travel lightspeed or faster, that has mass... which cant be done, sorry
  38. Profile photo of mooseyfate
    mooseyfate Male 13-17
    851 posts
    October 21, 2005 at 11:58 pm
    but what if you did manage to move at light speed?
    you wouldn`t be able to see anything would you? no, you wouldn`t
  39. Profile photo of tim1977
    tim1977 Male 18-29
    49 posts
    October 22, 2005 at 12:46 am
    To the people who actually understand the concept of E=MC2. Why is it so difficult to apply in terms of creating an atomic bomb? What holds a brilliant mind from being able to apply this.
  40. Profile photo of blackmind
    blackmind Male 13-17
    696 posts
    October 22, 2005 at 5:15 am
    to tim1977
    .
    All matter,lets say plutonium,
    contains energy.
    E=MC2 shows how much.
    E=MC2 Energy=the speed of light squared (multaplyed by its self).
    in an atomic bomb this energy is relised in the form of movment,heat,light and radiation.
    .
    .
    .
    happy now?
  41. Profile photo of medic1971
    medic1971 Male 30-39
    200 posts
    October 22, 2005 at 8:02 am
    Here is something that is bothering me.... Let`s just say you could get into a rocket ship and take off from earth and travel at say 10 times the speed of light. Then after about 10 minutes you could stop, look back, and watch yourself take off.
    Now here is the part that troubles me. What if you took off in a rocket and traveled at 10 times the speed of light, then turned around and came back to earth at 20 times the speed of light. Would you not get back before you left?
    Maybe that`s why the speed of light is a the universal speed limit....
  42. Profile photo of _Wondergirl_
    _Wondergirl_ Female 30-39
    810 posts
    October 22, 2005 at 12:31 pm
    huh?
  43. Profile photo of Ribs
    Ribs Male 18-29
    45 posts
    October 22, 2005 at 2:43 pm
    tim1977: Fission bombs are difficult to create because nuclear fission only occurs in a sustained chain reaction if the mass of fissile material is big enough. Nucleii that undergo fission require that they be bombarded with neutrons, at which point they may split into smaller nucleii and a bunch of neutrons, which may or may not cause other nearby nucleii to also undergo fission. Too small a mass of, say, plutonium, and not enough neutrons get created to cause enough other plutonium to undergo fission to sustain the reaction. The main problems in creating a fission bomb are 1) bringing two or more small (subcritical) masses together to form a big enough (supercritical) mass fast enough so that it can release most of its energy in its most compact shape, and 2) keeping the critical mass together long enough so that as much energy as possible is released. (if a little energy is released and the plutonium breaks into two smaller pieces immediately, the reaction will stop).
  44. Profile photo of Ribs
    Ribs Male 18-29
    45 posts
    October 22, 2005 at 2:53 pm
    Fusion bombs are difficult to create because fusion only occurs at intense heat and pressures. The center of the sun, for example, is hot and dense enough to force hydrogen into nuclear fusion. Fusion bombs actually require that a fission bomb be built around the hydrogren fuel to explode with enough heat and energy to cause the hydrogen to fuse.

    Back to fission bombs: the other hard part about making a fission bomb is creating or isolating enough of the particular isotopes of uranium and plutonium required. Most naturally occuring uranium is the wrong isotope, and plutonium is the wrong isotope and very rare anyways.

    I am aware I misspelled "nuclei." I suxx0r.

  45. Profile photo of silverant
    silverant Male 13-17
    215 posts
    October 22, 2005 at 6:02 pm
    hey everyone, read Neil deGrasse Tyson`s thing and listen to how he says "all" omg it`s so funny.
  46. Profile photo of tim1977
    tim1977 Male 18-29
    49 posts
    October 22, 2005 at 11:35 pm
    Medic1971: I have pondered the same idea. Theoretically, if travel at speeds above the speed of light were possible you could travel a distance - turn around and view history. However, by returning at speeds faster than light you would not be able to arrive before the light emitting event occurred. In your example you would spend 10 minutes travelling away from the event at 10 X the speed of light and 5 minutes returning at 20 X the speed of light. So by the time you made it back to the event, 15 minutes would have elapsed. With the speed of light at 299,792,458 meters/sec, the light emitted from the event would have already travelled 269,813,212,200 meters from the event that emitted the light.
  47. Profile photo of [DLM]Jimbo
    [DLM]Jimbo Male 18-29
    170 posts
    October 23, 2005 at 7:28 am
    medic1971: you`re right. That`s the idea behind the time travellers paradox. I`m not sure if you would be able to see yourself take off, but if you had a friend the same age as you, you took off, did a lap of the moon and came back, you`d be younger than your friend when you got back.

    Technically speaking, if you were to live at the top of a mountain, you`d also grow older slower than your friend at the bottom of the mountain. By a tiny tiny tiny amount. :D

  48. Profile photo of Ribs
    Ribs Male 18-29
    45 posts
    October 24, 2005 at 5:00 pm
    Jimbo - The "Twin Paradox" is what I think you`re referring to, but that`s unrelated to time travel. If you have two twins and one flies around at relativistic speeds for a while he will indeed be younger than the one that stays at earth. The "Twin Paradox" name turns out to be a misnomer, as it is not actually a paradox, and has actually been confirmed in scientific experiment (they flew atomic clocks around in airplanes, I believe).
  49. Profile photo of Meeshee57
    Meeshee57 Female 18-29
    43 posts
    November 17, 2005 at 7:05 pm
    I had a physics teacher that actually did experiments that are now books that are in the library of Congress.....so I already knew a lot of this and could keep up...and yes, I kept an "A" in physics.

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