Electromagnetic Spectrum is an interactive tour through the spectrum.  You’ll use it to cover:
•	The sources, users, detectors and dangers of each region within the spectrum
•	The sizes of the waves in each region
•	How we divide the electromagnetic spectrum into regions but it is just one kind of phenomenon
•	Scientific notation numbers and numbers written out in full
•	Common prefixes used in science to help us deal with large or small numbers.