What Is The Speed of Dark?
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2. cameramaster commented 10 years ago
So...the more we know the more we know how little we know?
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3. kolorotur commented 10 years ago
Neil DeGrasse Tyson's take on the question:
http://www.youtube.com/watch?v=h_FFjYSkkpA
http://www.youtube.com/watch?v=h_FFjYSkkpA
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5. Pyranthos commented 10 years ago
the shadow across the moon example is actually an illusion of darkness moving when in fact, its just different beams of particles being blocked in quick succession as you move your finger, the the different trajectory of the particular beams blocked is what give it the appearance of distance traveled. So its not really darkness travelling at all, its just some darkness no longer existing, while new darkness is created, in such rapid succession that it creates the illusion of darkness in motion.. much like a flip book works for animating images. Granted, it APPEARS to be darkness traveling over the lunar surface faster than the speed of light, but what we see is not always the reality of it.
+2 1. txo commented 10 years ago