Title: Shadows
1Shadows
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3Floor
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5Wall
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7Torch
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9Solid Object
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11Turning torch on
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13Light rays from torch
14Light rays from torch absorbed and reflected by
wall.
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16It is the reflected light that allows us to see
the wall
17Light rays from torch absorbed or reflected by
object
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19It is this diffused reflection of the light that
allows us to see the wall and object. These
reflected rays also allow us to see the back of
the object and the wall without direct torch light
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22No direct light from torch
23No direct light from torch
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26Shadow of object on wall.
27The shadow is higher than the object.
28This is due to the angle formed by the light rays
hitting and missing the object
29We can change the height of the shadow by moving
the object and the torch.
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