mirror – a shiny object that reflects light instead of letting the light go through
TRANSCRIPT
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Mirror – a shiny object that reflects light instead of letting the light go through.
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A reflection off a smooth surface.
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A reflection off a rough surface.
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“angle of incidence equals the angle of reflection.”
A plane mirror is a mirror that is flat and smooth and
creates an image that is upright and reversed.
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A convex mirror is a mirror that is curved
outward and makes the image upright and
smaller.
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Used for –
• Side-view mirrors• Surveillance mirrors in stores
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A concave mirror is a mirror that curves
inward. From far away the image will appear
upside down. Close up, the image will appear
larger and upright.
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Used for –
• lighthouses • car headlights
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Lens – an optical tool that is transparent and refracts light as it passes through it.
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A convex lens is a lens that
curves outwards and refracts the
light inward to bring the focal point forward.
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Convex lenses can be used to fix far-sightedness by bringing
the focal point forward onto the retina.
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A concave lens is a lens that curves inwards and refracts the
light outward to push the focal point
back.
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Concave lenses can be used to fix near-sightedness by pushing
the focal point back onto the retina.