Order of EM spectrum (low to high frequency):
"Raging Martians Invaded Venus Using X-ray Guns"
Radio — Microwave — Infrared — Visible — Ultraviolet — X-ray — Gamma
Which end is dangerous? The "Gun" end (gamma/X-ray) — high frequency, high energy, ionising.
Visible light colours: Red Orange Yellow Green Blue Indigo Violet — "Richard Of York Gave Battle In Vain"
This memory aid covers Memory Aid within Electromagnetic Spectrum for GCSE Physics. Revise Electromagnetic Spectrum in Waves for GCSE Physics with 17 exam-style questions and 15 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 9 of 13 in this topic. Use it for quick recall, then test yourself straight afterwards so the memory aid becomes usable in an answer.
Practice questions for Electromagnetic Spectrum
What is the speed of all electromagnetic waves in a vacuum?
Explain the potential dangers of ultraviolet radiation to humans.