One Light, Seven Names

You'll learnthat the whole spectrum is one phenomenon ordered by the energy each photon carries.

A radio broadcast and a gamma ray are the same phenomenon. Not similar — the same. The whole spectrum is one thing sorted by how much energy a single photon carries, and almost everything students find hard about light is that number pointing the wrong way. Eleven short steps; press Next for each one.

11 STEPS · 6 QUICK CHECKS · λ IN METRES · E IN eV · v3

one phenomenon · seven names · sorted by photon energy

Before you start

What you're looking at

Seven boxes appearing one at a time, and one wave drawn underneath them.

The question

Are these seven different kinds of thing, or one thing sorted by a single number?

Step 1 / 11