Blue Light on a Dark Surface

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Description

Blue Light on a Dark Surface

TRY SOME QUICK QUESTIONS AND ANSWERS TO GET STARTED
Yes! The primary colours red, green and blue are used to produce secondary colours when using the RGB and HSB colour models.
Red, green and blue are the three additive primary colours used in the RGB colour model.
Blue and red are the two primary RGB colours that together make magenta!
_x000D_ _x000D_ Red, green and blue are the three primary colours in the RGB colour model.

Some key terms

About the diagram
  • This is one of a set of 3 diagrams showing torches projecting red, green and blue light onto a neutral coloured surface.
  • A fourth diagram shows what happens when all three are on at the same time and their beams partially overlap one another.
Understanding the diagrams
  • The diagrams illustrate how the RGB colour model works in practice.
  • Each torch emits light at the same intensity.
  • Each torch points towards a different area of the surface.
  • The light in each case is of a single wavelength so produces a spectral colour.
  • The selected wavelengths are: red = 660 nanometres (nm), green = 525 nm, blue = 460 nm.
About the RGB colour model
  • RGB colour is an additive colour model that combines wavelengths of light corresponding with the red, green and blue primary colours to produce other colours.
  • RGB colour is called a model because it is a method that can be followed to produce a full gamut of colours.
  • Red, green and blue are called additive primary colours in an RGB colour model because they can be added together to produce all other colours.
  • Each of the three beams is called a component of the resulting colour.
  • Different colours are produced by varying the intensity of the component colours between fully off and fully on.
  • When any two fully saturated additive primaries are combined they produce a secondary colour: yellow, cyan and magenta.
  • When fully saturated red, green and blue primary colours are combined they produce white.
  • Some RGB colour models can produce over 16 million colours by varying the proportion and intensity of each of the three component primary colours.
  • The additive RGB colour model cannot be used for mixing different colours of pigments, paints, inks, dyes or powder. To understand these colourants find out about subtractive colour.

Diagrams are free to download

Primary colour

Primary colours are a set of colours from which others can be produced by mixing (pigments, dyes etc.) or overlapping ...

White light

White light is the name given to visible light that contains all wavelengths of the visible spectrum at equal intensities ...

Light source

A light source is a natural or man-made object that emits one or more wavelengths of light. The Sun is ...

Wavelength

Wavelength is a measurement from any point on the path of a wave to the same point on its next ...

Diagrams are free to download

Downloads: Slides or Illustrations


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  • SLIDES are optimized for viewing on-screen.
  • ILLUSTRATIONS are optimized for printing on A4 pages in portrait format.
SLIDES
  • Slides are available in JPG and AI (Adobe Illustrator) file formats.
  • Titles: Slides have titles.
  • Backgrounds: Black.
  • Size: 1686 x 1124 pixels (3:2 aspect ratio).
ILLUSTRATIONS
  • 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


DOWNLOAD THE DIAGRAM ON THIS PAGE AS A JPG FILE
  • 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.
DOWNLOAD THE DIAGRAM ON THIS PAGE AS AN AI file
  • 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 lightcolourvision.org.

COPY & PASTING TEXT
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DOWNLOAD DIAGRAMS
  • 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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