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Vibrational Modes of a Circular Drum Here's an older thread: Some facts about mode-hopping.

Im selling this item on eBay, but after reading the specs I was wondering if there is actually a 500mw 1300nm diode in it? If so how much is a diode like that worth? http://bit.ly/GVVZTp

The title says it all, I got a little spec of Arctic silver on the diode, tried cleaning it with no pressure with the tip of a wet q-tip, I really didn't want to scratch the glass on it, and now my output looks like this with no lens...

Just had an epic laser battle for the Nugget casino in downtown Sparks (5 minutes away from Reno), there were at least 25 people with ALL green lasers (most of them were low power ~50mw) shining them on the casino as thousands watched, I must say, thanks to this forum, my 200mw was enough to...

Just as the title says, looking to buy a 3 mode 445nm laser with equal to or greater than 1.2 watts. preferably using a CR18650 battery. pm me offers :)

Hey guys, I just replaced my friends PS3 by replacing the optical pickup on the condition that i get to keep the old one. Anyway, I extracted the Blu Ray diode off of the old pickup and i soldered a wire to the ground and positive. I connected this directly to a CR123A battery just to see if it...

Has anyone tried this? I suck at MS paint :P It will project a magnified version of what is on the mirror on a wall the laser has to have a close FP so the image expands when it is reflected on the wall. and also a tripod for the laser is probably required for a steady image. here is a...

Title says it all. Shoot me a PM if you have any for sale.

www.rayfoss.com Should i buy this? I've been reading some bad things about the rayfoss website and am kind of skeptical about purchasing from them, but their prices are very reasonable....not to mention, it's waterproof!:wtf: If not that one, then how about this one...

100mw Green focusable laser pointer. I bought it about a month ago for 80 from another member of this forum. I have grown bored with it and am looking for something more powerful. The laser has a touchy button, but I think I managed to fix it. Works well and beam is visible day indoors and night...