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Light and waves, Lenses, Longitudinal / transverse waves, Transparent…
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Lenses
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ie. microscope, telescope, glasses, sniper etc.
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Transparent materials, translucent and opaque materials
Light can't travel through opaque materials, some is reflected and some is absorbed
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What is a wave
A wave is a way to transfer energy but not matter. They don’t transfer matters. The particles in waves all move or vibrate in some way.
Pinhole cameras
A pinhole camera forms an image on the screen because light from the object travels in straight lines.