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2006-09-09 09:41:58 · 37 answers · asked by Anonymous in Science & Mathematics Astronomy & Space

& is laser light faster than electric light?

2006-09-09 09:44:50 · update #1

& is laser light slower than muller light?

2006-09-09 10:00:41 · update #2

37 answers

No, and a pound of lead does not weigh more than a pound of feathers. I can't believe you waisted 5 pts for that question. But thanks for the 2pts. How bout 10 more?... :-)

2006-09-09 09:45:31 · answer #1 · answered by USMCstingray 7 · 6 2

first, Paul L, good job on aswering that the speed of light in vacuum is indeed 186,282.397 miles/second. never seen anyone even in college astronomy class that new that. That number is 5.878625 trillion miles in a light year (186282.397*60*60*24*365.2498). And the answer should be that the photons from both sources are the same speed, assuming the same arena for them both to be travelling through. The only difference would be the brightness of the two. Using the inverse square law, for every two units of space traveled, the photons spread out into twice the are as the were the previous unit, which makes the 1/4th the brightness, making the weaker one "appear" to dim and eventually dissapear. As Spock would say, this is highly illogical. But true. Hope this helps.

2006-09-09 11:00:36 · answer #2 · answered by Jason S 1 · 0 0

If you light a candle the flame gets brighter slowly. If you turn on the light in the room it is straight away at maximum brightness. It is also brighter than the candle, so I can see why it might appear as though candlelight is slower than "electric" light. Even a laser will be at maximum brightness straight away.

In each case, the light is exactly the same from each of them, none of them produce "slow" light.

2006-09-10 01:24:13 · answer #3 · answered by mybrownpolarbear 2 · 0 0

In a vacuum, they are the same.

Now, if you take the definition of the speed of light used in optics, then light travels slower than the "speed of light in a vacuum" when it is travelling through an optical medium such as air. In that sense, blue light travels very slightly slower than red light in air. Since the candle light is, on average, somewhat redder than the electric light, the light from the candle will, on average, travel a little faster than the light from the electric lamp.

2006-09-09 10:02:17 · answer #4 · answered by cosmo 7 · 1 0

Yes a candle light is slower because a candle is made from fire it does not travel as fast where as electricity travels at the speed of light.

2006-09-09 20:33:35 · answer #5 · answered by Syphcis 2 · 0 0

All light waves travel at the speed of light. In fact, all electromagnetic waves (which includes, infra red, ultra violet, radiowaves, microwaves...) travel at the speed of light. So all of the visible lights you talked about travel at the same speed (provided they are all travelling in the same medium, i.e. all in air, or all in a vacuum etc.)

Muller light, however, is one of the slowest substances known to man. Only glass is slower (have you ever seen it flow? But if you look at an old window: it's thicker at the bottom!)

2006-09-09 10:45:13 · answer #6 · answered by Steve-Bob 4 · 0 0

Candle light IS slower because of the wax in the candle makes the light sticky. `~<{:-)]#

Actually, the speed of does vary based on the medium it travels thru. The speed of light 'c' in Einstein's formula is in a vacuum. If the air around a candle is either more or less dense than around a light bulb, the light around the candle will travel slower (more dense air) or faster (less dense air) than around a light bulb.

2006-09-09 09:56:06 · answer #7 · answered by SPLATT 7 · 0 0

When traveling in a vacuum all photons will travel at the same speed regardless of their origin.

If you could measure any differences in speed from different sources then the differences would be caused by things in the environment which the photon is interacting with. Different energy photons will be affected to different degrees, this is why blue light bends more than red light...they are photons of different energies.

For example, sometimes super novas can be predicted before they are observable in visible light from Earth because they emit sub-atomic particles known as nutrinos. These nutrinos travel at the speed of light through space, much the same as the visible light, but unlike the visible light, it's very difficult to "slow" a nutrino and have it interact with something. As a result, the visible light is "slowed" by intergalactic/stellar dust while the nutrino isn't and arrives as much as 24 hours sooner.

2006-09-09 09:52:11 · answer #8 · answered by minuteblue 6 · 2 0

ALL LIGHT travels at a constant speed in a specific material. The speed of ALL LIGHT is c = apprx. 3.0 x 10^8 m/s (speed of light in a vacuum) or slower.

A fancy name for light is electromagnetic (EM) radiation. The speed of light can be derived from Maxwell's 4 equations for electricity and magnetism.

ALL LIGHT travels at the same speed whether the source of that light is travelling at a constant speed or accelerating. The fact of the speed of light being a constant in a constant-structure material is one of the basis for the theory of relativity.

Light is both a wave and a particle.

"Candle light", "electric light", "laser light", ALL EM waves, ALL LIGHT travel at the same speed in the same material, REGARDLESS OF THE LIGHT'S SOURCE.

If it behaves like light, it is light! If it does not behave like light, it is not called light!

If symptoms & bloodwork indicate AIDS, the patient has AIDS. If symptoms & blookwork do not indicate AIDS, the patient does not have AIDS.

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2006-09-09 09:59:45 · answer #9 · answered by BugsBiteBack 3 · 1 0

What is frustrating (and any of you light geniuses are welcome to try figuring this one out) is why light speed doesn't increase when the light source is accelerating, no matter how fast, yet at the same time light can travel faster then the speed of light.

Both experiments have been proved true.

2006-09-11 18:32:45 · answer #10 · answered by Anonymous · 0 0

Light is light, it dont matter if it comes from a candle or a 1000 mega watt bulb...light travels at the same constant speed... oh by the way...congratulations...ur the stupidest person ive seen here all day...nice one...ta ta

2006-09-09 14:21:50 · answer #11 · answered by Anonymous · 0 0

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