What is the speed of dark?

Answer 1

Light travels in waves of bundles of clusters of photons called wave-packets (if I remember correctly.)
When these photons strike the retina's photo-receptors (the retina is the back of the inside of the eye, near the optic near), they physically and chemically (I don't remember exactly how) convert the photons' energies into electrical impulses based upon the intensity and wavelength of the light waves, these impulses may vary. These impulses travel like information signals along the optic nerve, crossing the brain's line of symettry and arriving near a back (optics-related) portion of the brain. The brain then translates these signals into a constantly refreshed, and reinterpreted (understood) image in the brain of the images that came from the eyes just the instant before.

THE MOMENT the brain stops doing this OR the waves of light cease to hit the retina with enough frequency or intensity to be transformed into signals for the brain, this is when darkness begins.

The tail end of a group of light waves, putting on a blind-fold or sunglasses, walking into a dark room, receiving a blow to the head or any other neurological or optical damage...

Many things cause perception of darkness. Heck, just closing our eyes and going to sleep leads to this.

Thus the speed of darkness varies.

Physically, the absence of light approaches us at the same speed as the light, but has a delay based upon the period of time that the waves of light are coming toward us.

Thus, with a sensitive enough vision, being close enough to a star, the speed of dark is undefined because there would be no darkness in such a place until the star died.

Answer 2

Theory 1

Darkness does not move, it is always present, and light is layed on top of it. (As an analogy, consider a table as being darkness, a tablecloth as being light: when you pull the tablecloth off, the table itself (darkness) doesn't move).

This may all sound interesting, but in my simple mind darkness and light are opposites, so if we follow the yin-yang principle it isobvious to me that disturbing one of the two means that the other is disturbed in the opposite direction. In this theory the table stayson the same spot, so lets move on to the next theory.

Theory 2

Darkness moves at the same speed as light, and it meets the laws of motion in that Darkness is the equal and opposite reaction for the action of the movement of light.

Now this sounds more plausible, but the flaw in this one is that it seems that dark and light exist at the same time in the same place. What?? Sure, if you turn on the light in a closed room the space that was formerly filled with darkness is now filled with light! That means that the light was always there, but it was surpresses by darkness. Confused? Go to the next theory
Theory 3

A man stands at the doorway of his bedroom, attired in boxer shorts and a sleeveless undershirt. One hundred times in a row, he turns off the light switch and dashes for the bed. How many times does he see himself land under the covers? Zero. There isn't any light there. Obviously dark got there quicker than light. Ergo:
Let " d" equal the speed of dark
d = SQRT( e/m ) + 1
1 what? Hey, I provided the equation. You do the dimensional analysis.

I like this one, but it still needs some work. Good potential though.

Theory 4

Light moves. Darkness is the absence of light and does not.


An analogy may help:

Heat moves, cold is the absence of heat. You can describe the rate at which you “cool” and infer a “speed of cold” from that. However the physical reality is that only heat moves.
Similarly you might infer a “speed of darkness” measuring the rate at which darkness envelopes a room when the light is switched off (for example). But be aware that you are actually “measuring” a function of the speed of light – in the room case it is the speed at which the light leaves the room (ie c for speed of light over n refractive index of room accounting for light exit paths, absorption and reflection at boundaries, etc).

Answer 3

Scientists have recently measured the speed of dark using techniques available only in recent years, and with a ±0.3% error margin have determined it to be 257,387 km/sec. Theoretical physicists are puzzled over the findings, leading some to hypothesize "dark light", not to be confused with "dark matter" nor "dark energy". Proposed experiments are already being studied for determining what happens between sharply attenuated rays of light and the crest of dark light rays, since, apparently, their speeds are not synchronized. This news update is not for release until the day after March.

Answer 4

Dark doesn't move. But if it did, it would be the speed of light

Answer 5

Dark is not something but rather the absense of something. Dark is the absence of light. Light expels darkness so darkness retreats at the speed of light.

Answer 6

There is no speed of dark. It is only the absence of light

Answer 7

Wouldn't it be the speed of light, because dark is light receeding, if you are going from a light space to a dark space?

Answer 8

darkness is slow and ponderous. watch the sun rise and see it reluctantly creep into the woods and forests, to pass the day as insubstantial shadows, hiding in nooks and crannies. and again as the sun goes down, watch it rise like mist slowly to the sky. revealing once again the beauty of the stars that were hidden by the harsh light of the sun. and why not.

Answer 9

I don't know if this is a scientific or psychological question. If you sleep very well it seems like the twinkle of an eye. if you are making whoopie and enjoying it, time rushed by. If you have pain somewhere, something unsettling on you mind, or an upset stomach, the night lasts forever it seems. I suppose it is all relative.

Answer 10

darkness is neither an energy nor a matter.it is the absense of light.just like you cant move or measure vaccum u cant clculate speed of darkness