Light

Light travels as waves.

Light travels in straight lines, so if you have to represent a ray of light in a drawing, always use a ruler.

Unlike sound waves, light waves can travel through a vacuum (empty space). They do not need a substance to travel through, but they can travel through transparent and translucent substances.

A ray diagram shows how light travels, including what happens when it reaches a surface. In a ray diagram, you draw each ray as:

a straight line with an arrowhead pointing in the direction that the light travels

Remember to use a ruler and a sharp pencil.

Your job is to write a set of rules about reflections.

Your rules should be about the following

Angle of incidence and angle of reflection.

How to draw ray diagrams.

The normal line.

How to represent a mirror.

There is a video in GC shows you how to construct a ray diagram.

Next lesson I would like you to complete the textbook questions on reflection.

I will be available on Teams if you get stuck.