If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Unit 2: The human eye and the colourful world

700 possible mastery points

About this unit

What's inside our eyes? How do they work? Why do some people wear spectacles? Why do the stars twinkle? In this chapter, we will use the rules of refraction to explore the working of our eyes and their defects. We will learn how dispersion creates rainbows and how scattering creates the blue sky.

Level up on the above skills and collect up to 560 Mastery points
Up next for you:

Unit test

Level up on all the skills in this unit and collect up to 700 Mastery points!