SHOW AND TELL 144: Retroreflective roadsign under Ultraviolet and normal light.

7 months ago

SHOW AND TELL [144]: Retroreflective roadsign under Ultraviolet and normal light.

Wikipedia chapter on Retroreflector for signs : https://en.wikipedia.org/wiki/Retroreflector#For_signs

Wikipedia chapter on Retroreflective sheeting for road signs : https://en.wikipedia.org/wiki/Retroreflective_sheeting#For_road_signs

Link to example sign item description : https://shop.accu-shot.com/shop/us-snipers-official-manufacturer/us09-sign/

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