Vocabulary 1 Light and Mirrors - Topic 4

1. Bioluminescense: Light produced by  living organisms.

Some types of squid are biuluminiscense

2. Light ray : a straight-line beam of light as it travels outwards from its source .
The sun rays it an example of light rays

3. Law of Reflection: the angle of an incoming light ray equals the angle of the reflected.

 We can use a flash light and flat mirror to made law of reflection.

4. Concave mirror: a mirror that curves in on the shiny side.
 the driving mirrors is an example of concave mirrors.

5. Convex mirrors: a mirror that curves out on the shiny side.

Some person put convex mirrors in her(he)office to see ho enter in the office