What is reflection?

What is reflection?

1 Definition (Brockhaus) In physics, reflection means the throwing back of mechanical bodies (impact), particle or wave beams (electrical, acoustic, electromagnetic and probability waves) at interfaces or boundary layers between two media.

What is meant by reflection of light?

Light propagates in a straight line only in homogeneous materials. At the interface between different substances, it can either be deflected from its direction of propagation (refracted) or thrown back (reflected). The latter process is called reflection of light.

What does absorption mean in physics?

Absorption (physics) The term absorption (Latin: absorptio = absorption) generally refers to the sucking up, the taking in of something.

Which objects reflect light?

A piece of white cardboard and a mirror reflect the light of a light source, i.e. they throw it back. The white cardboard reflects the light in all directions – we can see it from all directions and the light reaches a large part of the room.

What becomes of absorbed light rays?

A red object absorbs all light rays except red, a green object absorbs all light rays except green, etc. A black object absorbs almost all light. The light “disappears” and its energy is in most cases converted into internal energy (the object becomes warmer).

Why do objects appear a certain color to us?

The objects in our world get their color by absorbing different rays and reflecting others, depending on the material. Water, for example, absorbs long-wave light much better than short-wave light.

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