Search results

Not in a projector like the one these diodes come from. Remember the laser diode is simply a light source for a DLP chip. The DLP chip is what is determining the image and image quality, it doesn't care where the light is coming from. Remember the red is from an LED and the green from...

Honestly Toaster, "it burns slow" and "it's not bright enough" are not enough to prove anything is wrong at all. Do you have a power meter? How did you set the current on the driver? That picture doesn't look perfect, but it doesn't look that bad either. And honestly, even if it is broken...

Oh, it is a sordid tale indeed, very complicated. Once you start reading, it takes a while to sort through the whole timeline in the early 2000s when all the legal battles over this stuff were being fought. Everybody was suing everyone else there for several years. Especially with Shuji suing...

This letter is as much about using the Casio name in sales as it is about the sales themselves, it seems. So it gets into multiple areas of law: trademark law (The Casio name is certainly a trademark), FDA-related radiation control law, etc. If you indeed do fall under the FDA's definition of...

Nope, sorry. Blue is harder to make than violet, but quite some margin. The first laser diodes that were actually blue weren't made until years after the first violet ones. And yet they were all called "blue", even when they were only violet.

It's blue in the sense that it's in the blue end of the spectrum. Up until when these diodes were invented in the mid-1990s, the diodes available were all in the red end of the spectrum, ie IR, red, maybe orange-ish. these new diodes came out, and while they were violet, they are in the blue...

Chillax dude. He's not talking about a chunk of plutonium, he's talking about things like these: Radioactive isotopes and Sources We literally played with these things in my high school physics class, such as putting them in cloud chambers and messing around with Geiger counters. Not...

The plane will take off.

It's the driver. It's pulsing however fast the driver is delivering the pulses.

That's crazy...I wonder, how long is the natural gas supposed to keep it burning? Underground coal fires can be crazy like there. There's a mountain in Germany where the coal underneath it has been burning continuously since 1688. Yes, that's over 300 years. Another coal seam near there...

To be clear this was the original way in 2004, and for quite some time the ONLY way, to isolate graphene. It had never been observed before they did it with Scotch tape. Now there are several other ways, thankfully. And I think this prize may have been a bit pre-mature. Their work was done...

“To be ignorant of one's ignorance is the malady of the ignorant.”

My wife wouldn't want me posting her on here, so here's my contribution.... Reposting from GooeyGus on an old thread, his lady friend, from: http://laserpointerforums.com/f48/laser-surgeon-watch-out-33154.html

Let me google that for you Let me google that for you And I'm sure you can find the "Buy, Sell, Trade" section, "Group Buy" section, and the "Tutorials" section on here as well. I don't link them because, well, they're all pretty super easy to find. Although if you're hoping I have that...

I bought them, or put them together from parts available here. Some from CNI, some from AtlasNova, some from members on here, and the rest built from parts. I didn't make the diodes in any of the lasers in my signature. Although I will add that I'm quite possibly the only person on here who...

^Just to be clear, even the process that is on die4laser is NOT "making a diode". That page is simply soldering a diode to a package of some sort. Even when doing that, you're buying a diode and then mounting it, not making the diode. That process described is simply fancy soldering, nothing...

^ Here, I'll translate: The materials necessary for direct-injection green laser diodes are very hard to make.

It's a real-world problem, often referred to as the "green gap". Attached is a decent illustration showing how materials just aren't/haven't been available that can emit green light with high efficiency and long lifetime. This chart is for LEDs and is a bit older now, but the same ideas still...

Not that original, people were drinking this stuff over 100 years ago. Where do you think "Coca-cola" originally got its name? It was a coca wine back in the day. I suppose it is more unusual to see in alcohol nowadays though, but Coca-Cola still to this day uses coca leaves in its soda. But...

I don't care how many lenses you use. If you decrease beam diameter, you will increase the divergence. They are inversely proportional to one another, and that inverse relationship can't be broken with lenses. Don't get me wrong, it's a cool little applet for learning about lenses, I'm...