Slide 1 : WELCOME TO THE SECRET OF COLOURS
When do we see an object ? : When do we see an object ? When light falls on an object and is reflected into our eyes, we see it.
Slide 3 : When white light passes through a prism,
this is what happens.
Slide 4 : White light gets split up into seven component colors,
when it passes through a prism. This process is known as
DISPERSION
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WHITE LIGHT IS ACOMPOSITE LIGHT. : WHITE LIGHT IS ACOMPOSITE LIGHT. The visible light has wavelength ranging from 400nm to 700nm.
Each colour has a range of wavelengths.
Violet has a range of wavelengths from410nm to 440nm.
650nm to 680nm is considered as red.
PRIMARY COLOURS : PRIMARY COLOURS V
I
B
G
Y
O
R Using R,B and G we can make any other color of light.
R,B and G lights can’t be obtained by mixing other colors of light.
R,B and G can be combined to form white light.
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Slide 12 : THANKYOU