Youtube Video vs. The Universe
Oh, Hey! MinuteEarth! http://youtube.com/minuteearth .........and you can also subscribe to MinutePhysics! http://dft.ba/-minutephysics_sub MinutePhysics is on Google+ - http://bit.ly/qzEwc6...
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The observable universe is 93 billion light years across. But just how big is that? Well,it's roughly 100 quintillion (10^20) times the size of the Earth.For comparison, imagine taking this whole 1920 pixel by 1080 pixel video and makingjust one pixel white and the rest black. If you were to take each row of one thousand,nine hundred and twenty pixels and string them all end to end, then shrink that hugedistance down to the size of one pixel of the video, string the new video's pixels outend to end, shrink it all down AGAIN to the size of one pixel of video, and string thepixels out end to end once more... that one tiny white pixel represents the earth, andthe string of all the pixels all together, is one tenth of the diameter of the observableuniverse.
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The observable universe is 93 billion light years across. But just how big is that? Well,it's roughly 100 quintillion (10^20) times the size of the Earth.For comparison, imagine taking this whole 1920 pixel by 1080 pixel video and makingjust one pixel white and the rest black. If you were to take each row of one thousand,nine hundred and twenty pixels and string them all end to end, then shrink that hugedistance down to the size of one pixel of the video, string the new video's pixels outend to end, shrink it all down AGAIN to the size of one pixel of video, and string thepixels out end to end once more... that one tiny white pixel represents the earth, andthe string of all the pixels all together, is one tenth of the diameter of the observableuniverse.
