2007-04-14 15:29:41 · 10 answers · asked by Ian W 2 in Science & Mathematics ➔ Astronomy & Space
Same as the speed of light.
2007-04-14 15:37:17 · answer #1 · answered by Anonymous · 0⤊ 0⤋
If it has a speed it would be the speed of light. Dark is just the absence of light. So as the last light leaves an area, darkness spreads out at the speed of light.
2007-04-14 22:38:40 · answer #2 · answered by campbelp2002 7 · 1⤊ 0⤋
Dark has no speed. Dark means the absence of light. It is not something that moves. Kind of like asking the speed of silence, instead of the speed of sound.
2007-04-14 22:48:41 · answer #3 · answered by David M 2 · 0⤊ 0⤋
Consider this:
How much cash money do you have when you are broke?
None, right? Well when you do have cash money, you are
not broke, right?
Well light and dark are kind of similar situations. When you have light, things are lit up and possibly warm. When you take away the light, it becomes dark and even cold. So darkness is the absence of light. Darkness is not something you can measure or track with instruments. Light is what you measure,
and track. Darkness can not be interrupted by passing a solid panel through it, but light can. So light is the thing that is traveling from one point to another, not darkness. Darkness is what you have left when you take the light away.
2007-04-15 10:57:24 · answer #4 · answered by zahbudar 6 · 0⤊ 0⤋
What is darkness? The absence of light. If you want to go technical about it, an area that is being darkened does so by being cut off from a supply of light, and the light ray leaves as fast as it came in.
Then again, the energy of the light that is already in a room will bounce off the object or the walls of a room until they are absorbed. In consequence, those objects will gain energy and thus pick up heat, and will then radiate in the infrared. Unless you have a way to cool off than remnant energy, then there will always be light, albeit at a frequency that is too low to see with the naked eye.
2007-04-14 22:36:28 · answer #5 · answered by Vincent G 7 · 0⤊ 0⤋
The speed of light.
2007-04-14 22:46:32 · answer #6 · answered by aximili12hp 4 · 0⤊ 0⤋
there is no way to measure such the dark is really a void of light it is a lack of a substance there for it has nothing to measure as far as speed is concerned we can measure the speed of light because it has a moving substance in fact with out the moving substance there is no light hence darkness is the absence of light
2007-04-14 22:35:32 · answer #7 · answered by steel warrior 01 2 · 0⤊ 0⤋
One could define "dark" as light waves with negligible magnitude (or rather the magnitude of electromagnetic waves filtered for a range of specific frequencies is negligible). Thus it'd be no different than the speed of light.
2007-04-14 23:46:20 · answer #8 · answered by Jay 3 · 0⤊ 0⤋
as fast as light
2007-04-14 22:38:40 · answer #9 · answered by KANDARP V 1 · 0⤊ 0⤋
zero
2007-04-15 00:32:46 · answer #10 · answered by the.lilhb 2 · 1⤊ 0⤋