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light wave travel in vaccume
but partiles dont travel in vaccume why?

2006-09-03 19:04:31 · 11 answers · asked by k.Ramesh 1 in Science & Mathematics Physics

11 answers

Photons, like other particles, behave as waves when traveling through space. We hear "particle" and think they're like tiny baseballs, but they're not. The classic double-slit experiment shows that the particle travels through space as a wave function but interacts with another particle at a single point.

2006-09-03 21:46:48 · answer #1 · answered by injanier 7 · 0 0

fathead is right. Generally nowadays photons are theorised to be wave packets. That is two waves that are so closely alike that there summing causes one bump whilst in other space they cancel out. This bump acts like a particle but the packet also still has wave properties. Of corse their may be changes to this theory later. The trouble with the Universe is we are like a drunk under a lamp post looking for their car keys. Ohhhh the light is better here! We can't really appreciate what things are as they are in the microscopic world so we struggle to find something to compare in the Macroscopic world. These comparisons will always have limits.

Vacuums don't change lights properties at all. Light speed in any medium other than a vacuum is slower however.

2006-09-03 19:21:11 · answer #2 · answered by slatibartfast 3 · 0 0

No doubt that light having wave nature & according to me, only wave nature. I strongly disagree that light has dual nature.
Supporting observation: We know that EM waves are produced when charge particle oscillates or move from one enegy level to the other. Consider one atom. One electron is undergoing a transition from one state to the other while it is stimulated by a photon. We know that the photon have finite energy. The fields of EM wave while interfering with the field of electron an energy exchange takes place and the vibrational state of electron increases. so it goes to the higher state. When the electron is coming back to the ground state it give up the energy difference, which is finite, as am EM wave. So that particular wave will have a definite frequency and duration, ie finite energy. That is the reason we are considering it as wave packets, hence photons. So light is indeed a wave having no mass. The energy is stored in the varying E&M fields.

2006-09-03 20:57:57 · answer #3 · answered by libranjiss 1 · 0 0

who told u particles don't travel in vacuum?! infact particles travel better in vacuum due to absense of air/media drag.what u should have asked is ---- why light waves dont need any medium to travel? ask it and i will answer it.
moreover whether light is a particle or wave depends upon the"environment" in which we are performing the experiments. there cant be a clear cut answer. it is said that on mond/tues/ wed day light behaves as wave, on thu/fri /sat day it behaves as particle and on sunday u need to toss a coin to find out its mood.

2006-09-03 21:25:06 · answer #4 · answered by victor 1 · 0 0

Photons are particles with no electrical charge and no mass, but they do have energy and momentum, a property that allows photons to affect other particles when they collide with them.
Although momentum is usually considered a property of objects with mass, photons also have momentum. Momentum determines the amount of force, or pressure, that an object exerts when it hits a surface. In classical physics, or physics that deals with the behavior of objects we encounter in everyday life, momentum is equal to the product of the mass of an object multiplied by its velocity (the combination of its speed and direction). While photons do not have mass, scientists have found that they exert extremely small amounts of pressure when they strike surfaces. Scientists have redefined momentum to include the force exerted by photons, called light pressure or radiation pressure.

2006-09-03 19:08:24 · answer #5 · answered by isaac a 3 · 0 0

light has mass so it must have a physical entitiy, it may behave like a wave in the same way as a river forms ripples, light travels very well in vacuum?

2006-09-04 00:54:52 · answer #6 · answered by treb67 2 · 0 0

paticles have mass not photons(photons only have momentum,wave nature and energy),that's why it will follow Newton's law too and according to newton's law particle will not travel in vaccume.

2006-09-06 03:01:46 · answer #7 · answered by mahaveersoganiappu 2 · 0 0

I think, argumentation is bound to be an integral part of any question/answer forum and if you always find it negative in your case, try only to answer. Though trolling amongst the trolls is not a bad idea, but masks kill the truth.

2016-03-26 21:25:54 · answer #8 · answered by ? 4 · 0 0

no!!!!!!!!!!!!!without doughty i can say with the help of science& physics that light is particle as well as wave >>>>>>>>

2006-09-03 19:15:27 · answer #9 · answered by reshu 1 · 0 0

Yes, ;-)

Which it appears to be depends upon what experiment you are performing.

2006-09-03 19:08:09 · answer #10 · answered by Anonymous · 0 0

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