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Light waves, colour, and the key equation

Light waves, colour, and the key equation

Wave sketches comparing blue light with shorter wavelength and red light with longer wavelength, showing how wavelength and frequency are related

Light from stars and galaxies is an electromagnetic wave, and visible light is only a small part of the electromagnetic spectrum.

The Big Bang, red-shift and the expanding Universe Lesson

  1. GCSE
  2. /Physics
  3. /The Big Bang, red-shift and the expanding Universe

Step-by-step lessons covering Edexcel GCSE Physics The Big Bang, red-shift and the expanding Universe for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Master the required practical work and core equations early, since both papers can draw on content and maths skills from across the whole specification.

Lessons