Today I learned on Nostr: TIL that "Counterfeit Detector Pen" is a thing and the principle behind is that ...

TIL that "Counterfeit Detector Pen" is a thing and the principle behind is that Amylose in Starch traps triiodide in its helix structure.

http://youtube.com/watch?v=xDaVCyOBSsY
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1fupbxw/til_that_counterfeit_detector_pen_is_a_thing_and/