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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

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  1. tenex

    Fragment of Hipparchus star catalog found in medieval palimpsest

    "Lost" ancient works may not be for long. Medieval monks scraped such useless things clean to copy religious texts onto the parchment, and modern techniques are getting ever better at uncovering what's underneath. (A famous example discovered c.1980 was the treatise "On the Balance" in which...
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