Electromagnetic Waves
Electromagnetic Waves
An electromagnetic wave is a transverse wave that transfers energy from a source to an absorber. Unlike mechanical waves, such as sound or water waves, electromagnetic waves do not need matter to travel through.
Step-by-step lessons on OCR GCSE Physics The electromagnetic spectrum. Each one builds up to exam-style questions. Paper 2 and Paper 4 include synoptic questions that draw on Topics P1–P4, so revisit earlier topics before final exams rather than treating each paper as self-contained.