how the light crossing the mirror or glass without abstacle?

Answer 1

What in the world is an "abstacle"?

Answer 2

without obstacle perhaps?

Are you asking why the light does not pass through the mirror?

Let’s take a minute to think about what exactly a mirror does. A mirror reflect back an image of whatever is in front of it. The reflected image is made up of particles of light called photons.

There are mirrors all around us: windows, puddles, a shiny new car, a silver tea pot, etc. To better understand how a mirror works, think about what all of these things have in common. The most important thing you’ll notice is that all these things are very smooth. The other things you will find is that a shiny metal surface, such as a polished silver tea pot, makes a better mirror than a glass window.

When a photon of light hits a mirror it cause the electrons in the atom to vibrate and give off and identical photon of light. Metals work better as mirrors because they have many electrons shared by all the metal atoms, but the atoms in glass don’t share their electrons very well with their neighbors. That’s also why metals are used in wires to conduct electricity.

Mirrors need to be smooth so that the light is reflected goes straight back to where it came from, instead of being scattered in a different direction.

Most mirrors in our everyday life have three layers. The bottom layer is a dark, protective layer. The middle layer, the most important part, is made of a metal, usually aluminum (just like soda pop cans). The top layer is glass, because its clear and it protects the smooth aluminum layer.

Answer 3

by the law of refraction

Answer 4

the law of refraction is played over there...

Answer 5

Even allowing for 'abstacle' = 'obstacle', I *still* don't see a question here.

Guess I'm just stupid............


Doug