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COLOUR

COLOUR. Primary colours of light. There are THREE primary colours of light: RED , GREEN and BLUE. All other colours can be made by combining these three colours together, for example the screen of a colour television set. Other colour system primaries. PAINTS: RED , YELLOW and BLUE

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COLOUR

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  1. COLOUR

  2. Primary colours of light There are THREE primary colours of light: RED, GREEN and BLUE All other colours can be made by combining these three colours together, for example the screen of a colour television set. web site: www.ktaggart.com

  3. Other colour system primaries • PAINTS: • RED, YELLOW and BLUE • PRINTING (eg ink-jet printers): • MAGENTA, YELLOW and CYAN web site: www.ktaggart.com

  4. Adding coloured lights Colour Addition - Explore Science Colour Addition - NTNU Colour Addition - Crocodile Clip Presentation web site: www.ktaggart.com

  5. Secondary colours of light These are formed by adding together two primary colours of equal strength. YELLOW = RED + GREEN MAGENTA = RED + BLUE CYAN = GREEN + BLUE web site: www.ktaggart.com

  6. White light White light is formed by adding together all three primary colours. WHITE = RED + GREEN + BLUE web site: www.ktaggart.com

  7. Complementary colours of light These are two colours that when added together form white light. YELLOW + BLUE = WHITE MAGENTA + GREEN = WHITE CYAN + RED = WHITE Hidden Pairs Game on Colour Combination - by KT web site: www.ktaggart.com

  8. Coloured objects • The colour of an object is determined by the light it reflects or absorbs. • A red object reflects red light but absorbs all the others • The effect of coloured light on objects - Great Barr School web site: www.ktaggart.com

  9. Coloured filters • The colour of a filter determines the light it allows to pass. • A red filter only allows red to pass. • A green filter only allows green to pass. • The effect of a red filter • The effect of a blue filter • The effect of a green filter - Great Barr School web site: www.ktaggart.com

  10. Why blue plus yellowpaint gives green web site: www.ktaggart.com

  11. Question 1 • Choose appropriate words to fill the gaps in the paragraph below: • The _______ primary colours of light are: ________, __________ and ___________. • The ____________ colour yellow is formed when the two equal strength primary colours _______ and _______ are added together. • Yellow is the complementary colour of ___________. • A blue filter should only allow ______ light to pass. web site: www.ktaggart.com

  12. Question 2 • Explain why • you should be careful choosing clothes in a shop with coloured lighting. • Arsenal should not play Chelsea under green floodlights if they are both in home kit, • yellow ink is difficult to see on white paper using the light of a light bulb than in sunlight, web site: www.ktaggart.com

  13. Simulations Colour Addition - Explore Science Colour addition - NTNU Colour Addition - Crocodile Clip Presentation Colour Addition 2 - Crocodile Clip Presentation Hidden Pairs Game on Colour Combination - by KT - Microsoft WORD version Hidden Pairs Game on Colour Combination - by KT - NOTE: Requires the use of SMARTBOARD software Colour Subtraction - Explore Science Coloured shadows - NTNU The effect of coloured light on objects - Great Barr School The effect of a red filter - Great Barr School The effect of a blue filter - Great Barr School The effect of a green filter - Great Barr School Effect of Filters - KT TV Screens - Colorado web site: www.ktaggart.com

  14. Puzzles Colour Crossword Cryptogram on Colour Letter Tile Puzzle on Colour Fallen Phrase Puzzle on Colour web site: www.ktaggart.com

  15. Related Presentaions Refraction Powerpoint by KT Dispersion Powerpoint by KT web site: www.ktaggart.com

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