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15 cards from this deck
Pass through Earth's atmosphere
Communication ones travel long distances without absorption
Heat water molecules inside food
A few centimetres
Water molecules
Hotter objects emit more IR
Thermal images
Detect suspects in dark
Toasters (IR heats food when absorbed)
IR radiation & visible light
Short distances only
Must be in line of sight of emitter
Thin glass/plastic strands carrying data
Total internal reflection of IR pulses
To prevent dispersion (information loss)
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