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Genuine panasonic cells are great, they usually look far from spectacular but meet the figures quoted in their datasheets. For capacity you need to see if the value is a typical or minimal, but they'll often meet the typical value or exceed it, certainly when new. Anything branded 'ultrafire'...

Oh, the slow ramp up in power measurement is due to the LPM then, if you have lasers like dpss greens that need to warm up a bit before getting to full power you'll notice the changes in brightness upon powering it up by eye. Getting these things of ebay always a bit tricky, you never know if...

CMY(K) is a substracting color system for print indeed. The main reason to have black in there is so you can use only black pigment/toner to print purely black text and such, which is pretty common. If you printed CMY on the same spot it'd look near black, though usually a bit off. As for...

Plenty of clones out there - even from things that were not that well designed to begin with like most wicked laser products. I'm more surprised that they'd sell this as a laser to use on a gun. Most targeting lasers on firearms are red and single mode, for good reason: DPSS lasers are too...

That might be an option indeed - some layer that can be ablated, especially against pulsed lasers. For CW this would be a bit more difficult to do, but you could ultimately make the UAV reflective for the wavelength used. If you make it retroreflective it'd basically automatically shoot back...

I reckon you'll be fine - the emission from a matte surface is not that dangerous unless you are -realy- close to it. 3 watts burning a bagel at arms length or so should not be that problematic, though uncomfortably bright if you're indoors. If you looked at the same thing outdoors in full...

Yeah, it would be pretty much invisible, that's how light scattering works. Standing next to it or holding it may seem to produce a very visible beam, but from the sides it really is hardly visible. You could point a 1 watt 532 nm laser straight up, and i would not notice that even 100 meters...

Looks like a very nice laser to me! With 70-ish mW power output i would not really expect any thermal problems or a required duty cycle as long as it is constructed decently, which it seems to be. It seems fit for continuous operation really, up to fully discharging a battery and then just...

Well yeah, you could make it all seem extremely absurd. Then again littering is a real world problem, and having some automated system that cleans a place up would be valuable to have. And as far as that goes using drones to do so may not be that bad away to go about it, especially in...

Well, economic growth will not make laser diodes of random wavelengths suddenly being produced, unless there is an actual market (not enthusiasts, but mass consumer) for them. Yellow would probably very useful in projection though. You can get there by mixing red and green, but you need a heck...

There are benefits to having direct yellow for projectors and such, so i'd give it some chance at least. Having yellow as a color can increase the efficiency of a display or projector quite a bit - for now it's mostly Sharp developing this for screens, but others could very well tag along. It...

Don't have it deleted. If it's unclear what batteries are to be used in a product, that should be made clear in a manual or something like that. It could even be marked on the device itself to avoid any confusion: on most consumer devices it's even marked what way around to put in AA...

Sorry to hear it failed. But 'smoke out of xxx' is often quite useful to find faults, it's certainly a lot better than just dying without any signs. If the batteries are okay i'd say that the smoke came from the negative contact spring, board or switch burning out. They should send you a...

Yeah, that's a big problem in the US indeed. It's also why you see a lot of medication listed on darknet markets, things that have no use as a recreational drug at all, but just treat a real medical condition. When looking at some vendors they actually make most of their sales on uncontrolled...

Originally pulsed lasers (pumped by chemical reaction, not electricity) were the only option to provide adequate power output to do significant damage. If you are using a pulsed laser you have to hit the target straight on when firing the pulse, if you miss, you must wait for the system to...

Well, it's part of Arabic culture as well, to us it may seem a bit strange to pointer lasers a pilots that are our friends and even throwing out new little flags from the helicopters. In these video's you also see some fireworks that go pretty far up in the air with helicopters fly over very...

So you want to make sure they are under 1 mW for safety reasons, a wise precaution. Next question is what device to measure this with. The laser power meters used by people on this forum are not suitable for measuring that low a power level, they are more intended for thousands of mW readings...

The list of things that make you weaker insteadof stronger, but not kill you, is probably endless. My usual counter-argument for it is: go ask someone that has his legs blown off by a landmine - i doubt they're better off due to that experience in general. HPV vaccination was added to the...

To be honest that type of captcha is -very- easy to solve by a computer, this example is so simple that basic OCR software will probably get it right. This is also why recaptacha abandoned this type a year or so ago, they became so easy to machine-solve that they were no longer useful. They...

It shouldn't be a big problem indeed, if you point something like that up in the air you can clearly see the beam, but if you point it straight up chances are someone even a few hundred meters away from you will hardly see anything at all. Under typical conditions the scatter is strongest...