You will have one Glass prism, screen and ray-box

Try to set your apparatus as you like

Questions what will you observe after your

setting? If you are scientist, what hypothesis will

you suggest?

When white light pass the prism, the light will refract and disperse into seven colours.

White light is a mixture of coloured lights.

They are red, orange, yellow, green, indigo, blue and violet.

This is called colour spectrum.

How to make rainbow by yourself?

http://hk.youtube.com/watch?v=fIbxHqPyF2U

Why does the man stand against the sunlight when he is making the rainbow?

Answer: Only when the sun light from our backside can produce totally internal reflection, and received by ours eyes.

Misconception Rainbow is produced just by one

droplet

http://hk.youtube.com/watch?v=LoL1Mn5v6GY