Light-related diagrams

Each diagram can be viewed on its own page with a full explanation

Did you know they are all FREE to download!

Facts about the Sun
Facts about Sunlight
Facts about White Light
Visible Spectrum
Wavelengths from Red to Violet
Bands of Colour from Red to Violet
Wavelengths Between Red & Violet
Continuous Colour from Red to Violet
Long Waves to Short Waves
Wavelength & the EM Spectrum
Features of Electromagnetic Waves
Electric & Magnetic Properties of Light
Comparing Wavelengths - Radio to Gamma
Comparing Wavelengths of Red & Violet
Frequency of Electromagnetic Waves
Comparing Frequencies of Red & Violet
Electromagnetic Spectrum
Wavelength, Frequency & Energy Compared
Calculating the Frequency of EM Waves
Wavelength & Speed of Light
Combining Spectral Colours to Make White
Reflection of a Ray of Light
Refraction Towards the Normal
Refraction Away from the Normal
Refraction - Faster to Slower medium
Refraction - Slower to Faster Medium
Reflection & Refraction - Flat Boundary
Reflection & Refraction - Curved Boundary
Reflection & Refraction  - 90 deg to Boundary
Reflection & Refraction - 90 deg to Tangent
Refraction of a Wave of Light
Chromatic Dispersion of White Light
Chromatic Dispersion of R, G & B Rays
Refraction & Dispersion of White Light
Refraction & Dispersion
Refractive Index Explained
How to Use Refractive Indices
The Law of Refraction Explained
Refraction Slows Down Light
Refraction Speeds Up Light
Chromatic Dispersion in a Prism
Sunlight Reflects off a Fish in Water
Reflection & Total Internal Reflection
Position of an Object in Water

Downloads: Slides or Illustrations

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  • Backgrounds: Black.
  • Size: 1686 x 1124 pixels (3:2 aspect ratio).
  • Illustrations are available in JPG and AI two file formats.
  • Titles: No titles.
  • Backgrounds: White.
  • Size: 1686 x 1124 (3:2 aspect ratio). So all illustrations reproduce at the same scale when inserted into Word documents etc.
  • Labels: Calibri 24pt Italic.

File formats: JPG & AI

  • JPG (JPEG) diagrams are 1686 x 1124 pixels (3:2 aspect ratio).
  • If a JPG diagram doesn’t fit your needs, you can download it as an AI (Adobe Illustrator) file and edit it yourself.
  • JPG files can be placed or pasted directly into MS Office documents.
  • All AI (Adobe Illustrator) diagrams are 1686 x 1124 pixels (3:2 aspect ratio).
  • All our diagrams are created in Adobe Illustrator as vector drawings.
  • Save as or export AI files to other formats including PDF (.pdf), PNG (.png), JPG (.jpeg) and SVG(.svg) etc.

Spelling: UK & US

We use English (UK) spelling by default here at

  • After copy/pasting text please do a spell-check to change our spelling to match your own document.
  • Download AI versions of diagrams to change the spelling or language used for titles, labels etc.
  • We are adding American English (US) versions of diagrams on request. Just contact us and let us know what you need.
  • When downloading JPG versions of diagrams, look out for JPG (UK) or JPG (US) in the download dialogue box.

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