if the light-speed is known from anybody;then, how much is the speed of dark?

Question

It's a Puzzle.

Answer 1

if you could find dark, then I'll tell you its speed

Answer 2

Depends on the type of dark. Light is only the wavelengths that humans see, which travels approximately 186,000 miles/sec. Other wavelengths may be present but we cannot see them so they are dark but have velocity. This is how they measure the speed and composition of distant bodies in space by the wavelengths they give off. e. g. look up red shift. If you are talking about absolute absence of anything then I would say it's speed is 0 or undefined.

Answer 3

There is no such thing as "darkness". It's the absence of light. Darkness cannot be measured. A speed cannot be determined. Light is capable of traveling at speeds of 186,000 miles per second (in a vacuum tube), so it's common sense to assume that a given area in a vacuum tube could become "dark" in that amount of time.

Answer 4

Since light is made up of photons that travel at a fixed speed, such speed being called the speed of light, and dark is the absense of photons, then the absense of something cannot be measured in terms of speed.

Hence, the speed of dark is zero.

Answer 5

well, light in the inverse of dark. therefore speed of dark is 1/speed of light.

Answer 6

well, your question in philosophically interesting, but scientifically funny. For darkness has never really been described in science. what has been described is light,& the abscence of it is darkness.
note that light is a real body of energy but darkness does not have any real meaning.

Answer 7

Well since dark is the absence of light, I'd say 3.14.