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Popular Science

@PopSci

Awe-inspiring science, tech, and DIY. Check out our freshly revamped YouTube channel: https://t.co/6tGGRJxa95

calendar_today29-01-2009 17:46:28

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Popular Science
@PopSci

1 year ago

Tools called lithophanes are physical images adorned with shallow engravings. Today, scientists are using them to overcome visual disabilities. popsci.com/science/lithop…

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