Recent content by smallfreak

Despite of the theoretical concepts of such a device, we all should be aware that the answer to uncertain times is not "more weapons". Otherwise, the safest countries in the world would be the ones with the most weapons around. Are they? No. For a reason. Engaging any weapon dramatically...

Well, I have no point for telling you what's right or wrong on this forum. But I have seen idiots and geniuses among all ages. Being adult is no warranty to be responsible and being minor is no argument against responsible behavior. In fact I have met quite a couple of minors that I trust more...

No, it will not. These cards are meant to directly show the collimated beam in a place where you expect it to be. They need quite high energy density to show the effect and you need the contrast of the surrounding area where the beam does NOT hit to see it. Even IF it would be able to detect a...

No. You see drivers capable to deliver „up to“ 1.6W. These are all fixed CURRENT. The voltage is adjusted to feed exactly this amount of current through the diode. It is depends on the type (and individual sample) of diode you use and changes with temperature. Semi conductors lower their...

No need to mess around with graphite or graphene (if you can get enough of it). Just take a diamond of proper size and all your thermal problems are gone. With 2200W/mK it easily beats even graphene hands down. And your pointer will get a very precious look with the diode mounted in a clear...

Did you measure it? „5mW“ and „cheap“ usually don‘t go together. They cheap ones usually have 50+ mW. They are labelled down to circumvent problems with marketing platforms and authorities.

Yes, go ahead. Kill yourself as you like. But try to not harm others. Really, when I watched your video how you shoot at the target in front of your window, I was glad not to live in your neighborhood. I don't want to imagine how often this beam went out of the window, probably hitting the...

That's a bad type of measurement. Depending on the IR power of your device, the goggles have to attenuate the light to well below 0.1 mW to be called "save". Do if yo have a maximum power of 100mW IR light from your Laser, you need a 1:1000 filter for that wavelength, or in other words at least...

You may evaluate the advertising yourself by applying common sense to it. It states that it will block „full range“ between UV and IR. That covers the entire visible spectrum and far beyond that. So what „color“ would you expect from a glass that blocks the entire visible spectrum to a...

I keep wondering what people sometimes call „not a big problem“. And how they somehow manage to stay alive and out of jail until retirement. If you want be one of these, you should evaluate your doing. What‘s your next project? Home made nuclear power plant? „Ups, I found out that my cans of...

What I see in this "videos" especially the second one ist not "flicker" of the Laser, but the result of the large air space between the source and the target. Let me guess - there is no problem with the beam, close to the Laser itself and it gets worse with the distance. It's essentially the...

Well, as far as I understand that, "money" ist still "easily available finanical ressources of various kind" as opposed to "capital", which includes bound values. "Cash" is the explicit physical expression of money, usually in form of bank notes and coins, so an even more immediate availability...

Be careful with what you wish. It might be granted. (edit: chinese proverb)

This video has been discussed here some time ago. These as...les are the reason why they thighten the laws on posessing and using Lasers tighter every year. They share the impression that such a device is a nice toy to have fun with your friends. And thousands of people think it‘s cool to have...

Are you sure there really is a fundamental difference? If „bandwidth“ is defined on the frequency graph instead of a measure of information throughput, then „linewidth“ is associated with spectrum charts. At least that‘s the only place where I have been confronted with this attribute so far...