do you think we will ever be able to stop light? ( if you turn on a flashlight an the light just stops a couple of feet from the flashlight. if you point it into the air ) do you think we can do it with a strong magnetic field?
2007-03-13 10:06:09 · 18 answers · asked by henry_o01 1 in Science & Mathematics ➔ Physics
i will answer your delightful question with a thorough basis in physics ( unlike some of the other answers ).
1. by its very definition, light can NEVER be stopped. it MUST travel at "c" , the speed of light ( you know the speed ) .
2. the only way light "stops" is when it changes into matter (and this has been done in the lab ). it is however not light anymore. in fact, the theory of relativity states that matter is essentially "frozen energy" or light.
3. black holes do NOT stop light. they merely cause it to follow infinite paths in a fixed space ( hence "trapping" it but it is always moving at the speed of light ).
4. magnetic fields do NOT alter the path of light. only gravity does this.
hope i answered your question : )
2007-03-13 14:16:03 · answer #1 · answered by fullbony 4 · 0⤊ 0⤋
The light does not stop, it seems to disappear because it has spread out, if you leave the torch on, walk a long distance from it, and look back, I think you will find that you will still be able to see some light coming from it. Which show that the light has not been stopped, unless of course there is a wall in the way. Which is one way to stop the light.
Light can also be bent, or reflected. Bent using gravity, reflected using most substances that it comes in contact with
2007-03-13 10:12:09 · answer #2 · answered by junkyaus1234 2 · 1⤊ 1⤋
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2016-11-25 01:06:36 · answer #3 · answered by cordwell 4 · 0⤊ 0⤋
Light is an electromagnetic wave. At the quantum level, its smallest unit is the photon. As long as it exists, it travels at the speed of light. If it collides with something opaque, it imparts its energy to the target, usually by raising an electron to a higher orbit. In this sense, you can 'stop' light. That's the only way.
2007-03-13 16:43:25 · answer #4 · answered by Frank N 7 · 0⤊ 0⤋
Assuming that you're talking about stopping light by some other means than placing some material that's opaque in its path, the answer is yes. A beam of light has been stopped and then restarted under laboratory conditions. See this website ==>http://www.news.harvard.edu/gazette/2001/01.24/01-stoplight.html
2007-03-13 10:13:11 · answer #5 · answered by Chug-a-Lug 7 · 1⤊ 0⤋
I know that light can be bent by gravity. Maybe with a strong enough force it could be stopped. It is much easier to just block it with a piece of paper.
Don't forget a black hole stops light. That is why it is black.
2007-03-13 10:09:14 · answer #6 · answered by Barkley Hound 7 · 0⤊ 0⤋
possibly, or with two wormholes, one taking in and one expelling, of course, a magnetic field can be generated, but since it is energy, it would need to be very strong, and a black hole has enough gravity to absorb light, so a gravitational pull might work.
2007-03-13 10:09:46 · answer #7 · answered by Darth Revan 2 · 0⤊ 0⤋
NO !
A magnetic field may have influence on electrically charged particles such as electrons. Photons that constitute the light
have no electrical (or magnetic)charge and are not affected by magnetic fields.
2007-03-13 10:14:48 · answer #8 · answered by giorgio s 4 · 0⤊ 1⤋
Black holes can absorb light, so if you could bend gravity to the point of creating a vortex, you could in theory, shape the light, and it will create... a somewhat, layer.
in one word.. no.. we can't do it. YET.
as soon as we can create light without heat, we will be able to stop light at a point.
2007-03-13 10:48:06 · answer #9 · answered by CarlosTheRed 3 · 0⤊ 1⤋
well if light is its own thing, then it must not be able to stop its self?
but if you can make light come from a lamp,
then you must have a way to stop it
or else ,it would just be something you cant stop,?
but what kinda world would you have to live in
if you belioeve someone can answer a question like that on yahoo
2007-03-13 10:15:10 · answer #10 · answered by Anonymous · 0⤊ 1⤋