The EM Spectrum
- The main groupings of the continuous electromagnetic (EM) spectrum are:
- Radio waves
- Microwaves
- Infrared
- Visible (red, orange, yellow, green, blue, indigo, violet)
- Ultraviolet
- X-rays
- Gamma rays
Examiner Tip
See if you can make up a mnemonic to help you remember the EM spectrum!One possibility is:
Raging Martians Invaded Venus Using X-ray Guns
To remember the colours of the visible spectrum you could remember either:- The name “Roy G. Biv”
- Or the saying “Richard Of York Gave Battle In Vain”
You could even combine both to have a mega mnemonic:
Raging Martians Invaded Roy G. Biv Using X-ray Guns!