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2.the image that can be seen on the screen
3.image appears to diverge
11.lets some light through
12.buldging out shape
15.produces light when heated
16.red, blue and green light
17.mostly covered in rods and cones
18.light from the sun
19.also known as the pole
22.smallest angle of incidence
23.the angle formed by a incident ray
25.light strikes a medium boundary at an angle larger than the critical angle
27.lets most light through
28.part of our vision which we cannot see things
31.a cell on the retina provides sharp focus and enables us to see colour
32.cyan, magenta and yellow
33.the cone system on the retina is faulty
1.the hole in the middle of the eye that lets light pass through
4.controls the size of the pupil
5.the direct light falls on a surface
6.produces light
7.the transparent curved 'window' covering the eye
8.does not let light through
9.transmits visual images to the brain in eletric signals
10.the point where the convergent rays meet
13.produces light in a chemical reaction
14.ben light when passed through an object
20.the angle formed by a reflected ray
20.the angle formed by a refracted ray
21.the light that bounces off a surface
24.hollowed out shape
26.a carefully curved transparent object
29.finds the angles of incidence and reflection
30.sensitive to low light

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