PANCHAYAT UNION MIDDLE SCHOOL, VISWANATHAMSIVAKASI UNION,VIRUDHUNAGAR DISTRICT,TAMILNADU STATE, INDIA-626124.CELL NO 97510-45246. Exit
DispersionDispersion of White lightColoursColour Filters HomeMixing Colour or Spectral ColoursColour Blindness – An ActivityMixing of Colours – An ActivityNewtons’ Colour Disc PHYSICS
The phenomenon by which a ray of light splits into itsconstituent colours when 00is passed through a ittransparent medium is known as dispersion. Red Orange Range of Yellow Visible Green Spectrum Blue 0.4 microns to Indigo 0.7 microns Violet Spectrum is the band of colours obtained due to the dispersion of Light. Rainbow
Pigment is an optically active substance which may be synthetic or ofMineral animal or vegetable origin.
Pigment is sensation produced in the brain due to the excitation of retina, byColour is a an optically active substance which may be synthetic or ofMineral animal or vegetable origin.electromagnetic waves.The range of wavelength of these waves is 4000Å to 8000ÅAngstrom (Å) : It is the unit used to measure wavelength of electromagneticradiation. 1 Å =10-10 m =10-8 cm
Red Orange Yellow Green Blue Indigo VioletPrimary Colours Red Blue Green
The Primary colours are the white light.Colours which when mixedin equal proportionsgive white light. ctor Projector r cto je oje Pro Pr
The colours obtained by the mixing two primary colours are called Secondary ColorsSecondary Colours Cyan Magenta Yellow
Pro je ctor Red + Green = YellowProjector Yellow r ctoPr oje
Red + Blue = Magenta Magenta ctor Projector r cto je oje Pro Pr
Pro je ctor Green + Blue = CyanProjector r ctoPr oje Cyan
The Secondary colours are obtained by projecting light of one colour on the otherand the rocess is known as colour mixing by addition. The colurs thus obtained arecalled additive colours Cyan Magenta Yellow
Complementary Colours can be defined as pair of colours one primary and othersecondary colour, which on mixing forms white light.Secondary Colours are known as subtractive primaries as they are obtained bysubtracting one of the primary colours from white light. White White White
Yellow + Green = White White ctor Projector r cto je oje Pro Pr
Pro je ctor Green + Cyan = WhiteProjector r cto WhitePr oje
Pro je ctor Red + Cyan = WhiteProjector White r ctoPr oje
Colour TrianglePrimary Colours Secondary Colours Red Magenta Green Yellow Blue Cyan Cyan The order of the colours is such that the sum of any two primary colours at the Corners gives the secondary colors between them. The sum of the primary colour on the vertex and the secondary colour on the side opposite to the vertex produces white light.
The Rod shaped cells are sensitive to brightness of light. The Cone shaped cellsorRetina : The retina, the colours.of the human eye, Consists ofsensitive andnumber cones are sensitive to screen There are red sensitive, blue a very largegreen sensitive cones. Colourare rod shaped cells and cone shaped cells.cones of light sensitive cells. They blind people have less number of particularthan people with normal vision. Hence they get colour confused. Retina Rod shaped Cells Cone shaped Cells
If you see the No 12. your vision is normal else not.
Look at this picture and click on the number you see. a) 21 b) 24 c ) 74 d) No number