Invisible graffiti that glows under UV
December 12, 2014 on 7:27 pm | In related links | Comments Off on Invisible graffiti that glows under UVWhat would you do with a can of spraypaint that’s invisible by day, but glows under black light? Check out Bilal Ghalib’s Glowffiti project for details. (via Golan Levin.)
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