The electromagnetic spectrum

We have been looking at the energy/light/photons that start off in the core of the sun and then arrive here at Earth. This energy is called the electromagnetic spectrum. Visible light is only part of it. It includes radio waves, UV waves, microwaves and some other types of waves. The sun is not the only source of these waves, in fact humans also emit electromagnetic radiation. It has been fascinating learning about how useful all these waves are for our everyday life. We use them in remote controls, TV's, radios, cellphones, cooking our food, medical procedures, and the list goes on.

This documentary is creating lots of great discussion around this topic. We are realizing that scientists use these waves for learning all sorts of new science.