How does a light passes through the glass?

Question

We all know that light strikes when it meets any object. How it passes through glass?

Answer 1

Light is an electro-magnetic wave very similar to that of a wifi signal but just at a much much higher frequency. Glass happen to not absorb frequencies of visible light very well.

Answer 2

This depends on the level of Physics that you're at... especially how much Quantum Physics you know.

In glass, the molecules and atoms have electron orbits that are unique... in a way where when ever light particles (photons) interacts with it, that photon either... passes through the electron orbits undeflected, or the electron will accept that photon, and the emit another photon with the same energy, travelling in the same direction as the original photon.

This is of course, describing the light inside the glass.  At the air/glass surface, ~2% of light is actually reflected back... and if the photons meet the surface at angles... then the light is refracted a bit, due to the emitted photons being spat out at different angles to the incident photons.

Answer 3

UV's answer is a good one; photons are absorbed and re-emitted by electrons in the glass. The other important factor is that the molecules in the glass are arranged randomly, evenly and without discontinuities. Glass is technically a liquid in the way its molecules are arranged.

Metals also transmit light, but because their electrons are more freely distributed in the material they reflect most of it. If you have a very thin layer of a metal it is transparent. LCD displays and some touch screens have thin layers of metal in them.

All white materials are actually transparent, eg. milk, salt, white hair, but because they have discontinuities or are made of small particles they scatter the light randomly instead of letting it pass straight through.

Answer 4

hi,

according to light passing through materials there are three classifications of materials

1-opaque: through which light does not pass

2-transparent: through which light passes

3-translucent: through which light passes till a certain thickness and after that light does not pass

now, glasses are of different types, some are opaque, some are translucent but most are transparent and therefore light passes through most of the glasses but there are examples of glasses through which light can not pass. there are also such glasses which let the light to pass through from one side but do not let the light to pass from the other side.

hope this helps. keep smiling. bye.

Answer 5

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Answer 6

because glass is a transparent particle.a trasparent medium can pass light through it.