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Seeing in colour
 Stare at the coloured dot in the middle of
the next picture for a minute.
 Then describe what you see when you
look at the next slide.
Pb human colour_perception
Pb human colour_perception
Pb human colour_perception
Colours
 Look at the next slide and make sure you
know the usual names of these six
colours.
red
cyan
magenta
blue
green
yellow
Colours
 Look at the next slide for a minute 
staring directly at the cross in the middle.
 Describe what you see when you look at
the following slide.
Pb human colour_perception
Pb human colour_perception
Pb human colour_perception
After-images and complementary
colours
 Look at each of the following shapes for
about 30 seconds.
 Describe the colour of the after-image you
see.
 Compare what you see with what other
people in the class see.
 Is there a pattern in the results? Note that
some people may see things differently, or
describe them differently.
A red shape
 gives an after-image that is
A blue shape
gives an after-image that is
A green shape
 gives an after-image that is
A magenta shape
gives an after-image that is
A yellow shape
gives an after-image that is
A cyan shape
gives an after-image that is
Pb human colour_perception

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Pb human colour_perception