Long time, no blogpost so here it is =)
Today I have been experimenting with my newly created IR filter for glowing lamps. By directing the regular cheap Ikea lamp towards my wall and putting my hand in front of it a shadow gets cast on the wall. No surprise. By inserting the IR filter in front of the lamp it blocks out most of the visible light. The hand in front of it now cast no visible shadow at all. A camera with the IR cut-off filter removed and a IR filter in front of it clearly see this invisible shadow. Spooky.
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