Spherical Mirrors

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Spherical Mirrors
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Concave mirror
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Ray tracing image formation
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Real Image
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Virtual Image
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Concave mirror
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Image characteristics concave mirror
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What is this?
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How many images?
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Virtual image Magnified and up-right
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Between the focal point and the mirror and far
behind the mirror
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Even closer to the focus
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Around the center of the mirror
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Real Inverted Minified
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Magnification depends on the distance
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Distortion
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Convex mirror
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Image characteristics convex mirror
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John Arnolfini and His Wife by Jan van
Eyck(1395-1441)
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What is the shape of the mirror?
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Convex mirror(fish-eye or butlers mirror)
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Escher
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What kind of mirror is this?
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Types of Telescopes
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Newtonian Telescope
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Cassegrain Telescope
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The two main telescope domes at the Keck
Observatory at Mauna Kea
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Deployment of the Hubble telescope 1990
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The Primary Mirror
2.4 m (8 ft) in diameter and weighs about 826 kg
(1820 lbs). It is constructed of ultra-low
expansion silica glass and coated with a thin
layer of pure aluminum to reflect visible light.
1.6 billion
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