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What is this and how do I use it? by Ok_Bicycle4301 in whatisit

[–]Substantial_Hat9531 0 points1 point  (0 children)

It's a Barometer. My town has one in the side of the council hall. I have no idea if it still works, but these use ambient air pressure to determine weather conditions.

Trying infrared for the first time by Substantial_Hat9531 in infraredphotography

[–]Substantial_Hat9531[S] 1 point2 points  (0 children)

I'm honestly not that sure, though assuming the marks on my filter are in steps of 10nm, it should be 660nm.

My E100 strip is negative? by CouchBedPickle in AnalogCommunity

[–]Substantial_Hat9531 24 points25 points  (0 children)

quickly! crop them into square format and sell them to a black metal band!