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by avidiax
98 days ago
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One thing I've wondered about is IR fluorescence photography. I've seen some examples in document forensics where a page that looks blank (or at least the ink is unrecognizably smudged) because of water exposure is completely legible with an infrared photo illuminated by UV. I suspect there must be a hidden world only visible in IR and UV (and long-wave IR, e.g. "thermal"). |
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