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Hi everyone, I have an overspec "5mw" AAA greenie from DX, at about 20mw - 30mw but there are a couple things that are really bothering me about it. First is that the lens is dirty (lots of speckles) and not properly focused. Second is that there isn't a good battery choice. Lithium primaries...

Hello everyone! I'm looking for thermophotovoltaic panels, the ones that absorb infrared radiation. I've looked around and couldn't find anyway... I posted a similar thread at CPF, but not much is coming up. It might be a tough request though...Thank you so much in advance!

Hello b.c. I'm looking for a low power green laser pointer with an ir filter. I've read the stickies and looked around but none seem to address lasers with ir filters. I live in the U.S. and I'm willing to order from iffy chinese sites, as well as ebay. Thanks!

I'd like to buy a 20mw 405nm from rayfoss. For the most part I've heard good things about rayfoss, but I've heard some bad things too, so I'd like to ask you guys about it. I live in the US. Is that ok? How long is shipping expected to take? Just to clarify, I'm really just looking for a...