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She was dumped as a puppy in the park next to where our office was at the time and wandered in the front door one day. I figured somebody would show up looking for her but after a week I ended up carrying her to the vet for all the vaccinations and i've had a dog ever since heh. She was...

One thing I like about laserlands is when you pick the fast shipping, that's actually what they use. Last order I placed got to my door in less than 30 hours after it was shipped.

I live in light pollution central unfortunately. The city is to the south and I have a steel mill literally in my back yard to the north.

Firstly, I have a female dog. She doesn't 'water the shrubbery'. Secondly, she's a big wuss. She's scared of anything 'new' in the house object wise. She doesn't like things changing. She's even terrified of power outages. But this is limited to inanimate objects. When strange people show...

Why do these people never freakin put the emitter size on the spec sheets? Divergence information is useless without that.

I can just see the headlines now... "Terrorists try to blow up moon using lasers" :p

I also think if you buy enough of the silicon wire, he throws in some shrink tubing as well. Seems like last time I ordered 30' of wire from him he sent me some tubing as well, anyway.

Ok. Well a few things then. You might want rethink your host choice a bit then. Most of the drivers that will be available don't have provisions for a momentary switch. Most of the drivers available to us hobbyists were really made to be used in flashlight hosts with 'end clickies' Using the...

The problem with the chinese companies on the red list, is that we don't really know what the actual registered names of a lot of these companies actually are. especially ones that market to westerners. For all we know companies like o-like might have an entirely different DBA name on the...

FYI, I hardly ever use flux. Most diodes we deal with are harvested, and thusly pre-tinned. Most solder available already has flux in it anyway. You actually have to actively look to find non-rosin core solder these days. You should however pre-tin your wires.. and also USE THE PROPER SIZE...

I built a few sets of something similar for someone recently. Only thing missing is 635, which will happen as soon as I get more 1x AAA MXDL's and drivers. I hadn't assembled the last 405 yet in this pic though. They're 125mW 660nm, ~20mW 532nm, 45mW 450nm (single mode diodes), 125mW 405nm...

Other than a brief stint at my parents, my christmas will most likely be split between housework, playing with lasers, or playing WoT. :p I haven't really done any 'christmas' stuff in the house for the better part of a decade. After all, the cats and dog don't really care if I put up a tree or...

There are also already two or three threads about this, but they're old, since this isn't really 'new information'.

I know your trolling, but i'll explain it anyway. :p The answer is Rayleigh scattering. During a lunar eclipse, the only light that's reaching the moon from the sun has passed through the earth's atmosphere, where, due to Rayleigh scattering, most the the shorter wavelengths have been...

The chromacompat table is the same one chroma uses (color mixing software, available on PL. just search for it.) Hence the name. The problem that arises here is that apparent laser brightness is trying to be converted to a measure that's ill suited to describing it. The problem boils down to...

There's a saying.. "Cheap, good or fast. You can only choose two"

The answer to 'how far' any laser goes is 'forever, until the photons hit something'. Power has nothing to do with that. and the apparent 'vanishing point' say shining it up in the air, will also look exactly the same distance regardless of if it's 5mW or 500mW.

Because it has no direct relation to the actual power of a laser and in the long run will only serve to confuse people and we'll start getting questions like 'how many lumen does it take to burn' and the like... It's useful to an extent for color mixing, but beyond the world of display...

If you want to know the luminous power just install chroma and plug in the wavelengths and powers in question. However 'lumens' isn't really the appropriate terminology to describe lasers.

The 'fail' is probably most likely due to the them using the cheapest GITD material possible rather than the source. the 'pens' in these look to be a low power 405, coupled with a near UV LED.. After all, Good GITD material will 'charge' even with very low levels of UV while the cheap stuff...