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2007-10-05 15:38:34 · 11 answers · asked by jai.pressure1 1 in Science & Mathematics Astronomy & Space

11 answers

Darkness doesn't really have a speed. It's like asking if the speed of sound is the same as the speed of silence.
But you can think of it this way, if you like: Let's say you have a region that was lit up by light which passed through the area. This region will then become dark again at the same rate that the light leaves that area. Therefore, the darkness is moving at the same speed as the light.

2007-10-05 15:54:40 · answer #1 · answered by Nature Boy 6 · 2 1

I would argue that dark has a speed and it's speed equals the speed of light.

First, one way to "define" the speed of dark is to say the rate at which darkness fills the void left by light. So if you have a flashlight shinning a beam of light (logically creating a shaft of light), then the flash light is turned off, darkness fills the 'light' void left behind as the last photons of light pass through the shaft.

An analogy would be electricity. Electricity is basically the flow of electrons, and this flow does not start/stop instantaniously. As an example, imagine a circuit that consist of a battery, an LED, a current limiting resistor and a switch. But here is the thing, the switch is 300,000,000 meters away from the LED. When you open the switch, the LED does not immediately go out. The electricity continues to flow through the LED keeping it lit for about 1.1 seconds (the speed of an electrical signal is about 90% the speed of light). But guess what, electrons do NOT move as the speed of light. They move relatively very slowly. But what does move very fast are the "holes". Basically, as an electron jumps from atom to atom, it leaves behind a hole that is quickly filled by another electron, which leaves behind a hole that is quickly filled... etc, etc, etc. So basically, when you open the switch, holes keep flowing toward the LED keeping it burning, and the speed of the last hole that leaves the switch after it is openned travels at 90% the speed of light towards the LED. Once that last hole has reached the LED about 1.1 seconds later, the LED finally goes out.

2007-10-05 18:18:11 · answer #2 · answered by HooKooDooKu 6 · 2 1

There is no speed of dark. Light happens to travel at 186,000 miles per second. An automobile can travel at 100 miles per hour. A human can run perhaps 30 miles per hour.

Darkness has no speed. It is not an object or a thing. Darkness does not have a wavelength on the electromagnetic spectrum. Darkness inside of a room or in interstellar space is not travelling at any speed. What you have posed is a nonsense philosophical question based upon a incorrect interpretation of semantics. Darkness is simply devoid of light.

http://answers.yahoo.com/search/search_result;_ylt=AkcF7UeK2udBVecxAGJ_OjkBxgt.;_ylv=3?p=speed+of+dark

2007-10-05 15:48:52 · answer #3 · answered by Troasa 7 · 4 0

The speed of light is faster than the speed of dark, (at this point in time), because scientists now, supposedly, recognise that 73 percent of the universe is dark; and they don't know what this dark energy/matter is!! On this basis, I reckon we will be living in the dark, in the not too distant future.

2007-10-05 17:26:18 · answer #4 · answered by smiley 2 · 1 1

It is hard to tell the speed in the dark since you cannot see. Thus we don't know if dark has speed or not.

2007-10-05 17:16:31 · answer #5 · answered by worldneverchanges 7 · 1 1

you're complicated distinctive concepts and a similar be conscious used as an adjective right here, yet with distinctive meanings. "darkish", on your storage occasion, is purely the absence of light. darkish would not flow - easy leaves, and the absence of light remains. that is like shutting off the water on your bathe. you do no longer all quickly get hit with a collection of non-water. The water stops flowing, is all. "darkish remember" is purely save in mind that we will no longer discover. Scientists CAN diploma the linked fee of gadgets as they wade by using area, and can estimate their mass. they additionally know the regulations of action that every person mass would desire to persist with, be they something the size of a bagel, or something the size of the Andromeda galaxy. the celebs and galaxies that we can see do no longer persist with the regulations properly - the stuff that we can see would not have sufficient mass to head the way it does. They flow as though there became plenty greater mass in contact a approach or the different. So scientists and physicists desperate that there would desire to be greater mass available, and that they have got given the call "darkish remember" to this mass.

2016-12-28 16:52:21 · answer #6 · answered by jitendra 4 · 0 0

Light flux radiation travels in a substance which was called at one time" the Aether" and now is called Dark matter.
Dark matter is invisible but it is the cause of motion of the micromasses which visible light is included.

So all motion is relative to a frame of reference at a point where Dark matter has a particular pressure inherent at that particular point in space.

Dark matter does not travel like large masses and micromasses ; it is stationary . However ;it is the cause of motion. Therefore all velocities of moving objects are relative to it.

2007-10-05 16:42:22 · answer #7 · answered by goring 6 · 0 1

dark is simply the absence of light. so the speed of dark is the rate at which light exists a space, the same as the original speed of light.

2007-10-05 15:47:36 · answer #8 · answered by Elle S 2 · 1 2

They are the same speed (darkness is simply the absence of light).

2007-10-05 15:44:10 · answer #9 · answered by Anonymous · 1 2

Dark travels in mysterious circles. Each circle is composed of sine waves, and shock waves. As light encroaches on the Darkness, it causes the dark to emit "darkeons,' whose absense creates light.

In 1876 Frederic Grossman proved the dr/dt = dbull/danswer for any given length of darkness.

To see darkeons, you have to turn out the lights.

2007-10-05 16:42:55 · answer #10 · answered by Warren W- a Mormon engineer 6 · 1 2

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