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 6: Electromagnetic radiation

400 possible mastery points

About this unit

Light rays, X-rays and gamma rays are all examples of electromagnetic radiation. Learn how the discovery of electromagnetic radiation and its properties have led to new physics concepts and technological applications. Explore the concept of wave-particle duality, interactions between electromagnetic radiation and matter, and emission spectra of electromagnetic radiation.

When you cross a wave with a particle, do you call it a "warticle" or a "pave"? As it turns out... neither.
Why does metal turn red when it gets really hot? Why does it turn white when it gets really, really hot?
Level up on the above skills and collect up to 240 Mastery points
What do a star and a radio station have in common?
Up next for you:

Unit test

Level up on all the skills in this unit and collect up to 400 Mastery points!