Physics · KS3 Y9 · Waves (Light & Sound)
Splitting white light
p46Free3:46Heddy Score 2 of 7, below the standardPlays from youtube-nocookie.com. No YouTube cookies until you press play.
What you need to know
- Electromagnetic waves are transverse and form one continuous spectrum.
- In order: radio, microwave, infrared, visible, ultraviolet, X-ray, gamma; frequency rises and wavelength falls along it.
- All electromagnetic waves travel at the same speed in a vacuum and need no medium.
- Our eyes detect only the visible part.
In this clip
0:26–2:57The electromagnetic spectrumgcse-phys-6-6-2-1Heddy ScoreSeven checks every clip must pass before students see it: trusted, on the map, accurate, focused, accessible, safe, and proven by students.2/7, Below the standard
- Trusted source · passed. The creator's own upload, live and playable here.
- On the map · not judged yet. A teacher watched it: it mainly teaches this map topic.
- Spec-true · not judged yet. Accurate, and right for the current UK specification.
- Focused · passed. One idea, short enough to watch in one go.
- Accessible · not judged yet. Good captions, clear sound and pictures.
- Safe for children · not judged yet. Right for 11 to 16 year olds, with no sales pitch.
- Proven · not judged yet. Earned from our students: they learn from it, find it helpful and watch it to the end.
Our students
How the Heddy Score worksNot enough students yet
Our own students' answers. These are what move ★7 Proven.Why we picked it
Freesciencelessons lesson on the electromagnetic spectrum and how materials respond to different waves; GCSE.
Freesciencelessons on YouTubechecked 2026-10-16