Whats the speed of darkness?

Question

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Answer 1

opposite of the speed of light

Answer 2

That overeducated answer almost impressed... Except,  those of us who paid any attention in  6th grade General Science know that there is no speed of darkness... it is only an absence of light.

Why do the formally educated speak as if we are all idiots only to tell us what we already know???

Excellent question, though!

Answer 3

Darkness is just the lack of light, so really the "speed" of darkness is just how fast light is lost. Or something on those terms.

Answer 4

If the speed of light is 299,792,458 meters per second then the speed of darkness is 0.

Answer 5

Darkness is just barely faster than the speed of light, because by the time the light gets there, the darkness is already there.

Answer 6

darkness is the absence of light

as light retreats darkness takes over at the same speed.

so, roughly 186,000 miles per second - same as light

Answer 7

It has no speed, it exists everywhere , at all places at once . So ,  maybe it has infinite speed or zero speed or both. Just a big empty nothingness  .

Answer 8

There can't be a possible speed of Darkness.

Without light, there would be darkness.

So, say that it takes 20 mins to lose Sun Light, it takes 20 mins for the darkness to appear. But, in Hindsight, it's already there. Only we can't see it because a 'light' source is lighting it up.

You've asked a good question, i just hope you can 'try' and understand my answer.

Answer 9

-3e8 m/s

Answer 10

7

Answer 11

Darkness is the absence of light. It is always there,

even when, you turn on the light. Ask anyone who has been

out in space. <}:-})

Answer 12

If a group of photons travel as waves so that the photonic energy is E = hf; where h is Planck's constant and f is the frequency of the photons, we can define "darkness" as that point where E = 0.

OK, for photons we can write Lf = c; where c is light speed and L is the wavelength of that group wave.  The wave frequency and the photon frequency are the same...one of the interesting aspects of light vs., say, sound.  Thus, from E = hf = hc/L, we see that E = 0 if and only if L = infinity.  In which case f = c/L = 0.  So the frequency of darkness is zero.

Bottom line, darkness, which is f = 0 or E = 0, travels at the speed of light c since Lf = (infinity)(1/infinity) = c still applies.  

This, of course, is just some math trickery because in fact darkness is not a something that can travel anywhere at any speed.  It is the absence of something.  Asking how fast darkness travels is somethiing like asking how fast the space surrounding a moving car travels.  The car (light) travels, not the space (darkness) that surrounds it.

Answer 13

Darkness happens when light doesn't exist, so when a lit room becomes dark, the speed at which it becomes dark is exactly the speed at which the light withdraws to the light source.

Answer 14

approach of darkness means escape of light.

So it should be just equal & opposite to the velocity of light.