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This new laser diode is intriguing. It's pulled me out of nearly two years of doing little related to lasers, to regaining my interest one again in this hobby. For those interested, I found a lens on surplus-shed which appears to be perfect for this particular laser diode. One of it's designed...

What you propose is of course, not possible. However, assuming you do have a one-way mirror that is 100% reflective on the inside, and at least partially transparent on the outside, you probably would not be able to store energy in it. You would not see it either, it would appear as an absence...

Hey, I think it's great that you're working towards achieving a superb level of physical fitness, but I have a simple question. What precisely does one have to do to accomplish the military challenge? Does it involve doing the entire thing in one sitting, or under a specific time constraint...

I am fascinated with lasers for a plethora of reasons, but I find a few things make them more appealing to me then they otherwise would have been: -Lasers, to me, are a representation of the advancement of technology and mankind. They are, in a way, representative of the pinnacle of technology...

Oh wow, I had an idea similar to this quite some time ago, but wasn't quite sure how I could get a laser powerful enough to ionize the air, or create plasma. If only I had access to incredibly expensive lab equipment... Nice find. One day, I will build one. AAlasers

This looks pretty promising, with a few minor tweaks, of course. I was wondering.. What kind of colours does/can this output? How much did it cost? Good job on the review! AAlasers

That would probably be due to a lack of adherence to a duty cycle. Sometimes these lasers have bad heat sinking, or were not meant to be kept on for a long period of time. However, if you were using your laser in a reasonable fashion, with an acceptable duty cycle and everything, it is probably...

I see. Although the images produced will be as clear and crisp as possible, it is not the way I would spend 6000 dollars.

What could possibly be in that lens to make it cost 6000? Just curious, price seems a little steep. Lenses are fairly inexpensive to make. So is an assembly. Maybe it is superb chromatic and spherical aberration correction? Also, that would probably make a decent beam expander with a few...

Also interested in magnesium powder. Thanks, AAlasers

Hello, I would be interested in magnesium, gallium, bismuth, copper, iron, and perhaps aluminum powders (the gallium and bismuth don't need to be powdered, but I would prefer the other elements to be powdered), all depending on the available prices after shipping (to canada). I would also be...

Hmm, perhaps sodium perchlorate reacted (double replacement reaction) with ammonium chloride/ potassium chloride could get me what I need, as sodium perchlorate does not appear to be restricted. Out of curiosity, how much ammonium nitrate did you order to get put on a watch-list?

I spent several hours looking through 'ambiguous and unclear' legislation, if you missed that in what I said. Unfortunately, there was no specific information that I was able to find.

Hello everyone, I've recently become interested in chemistry and pyrotechnics, and have spent a rather large amount of time trying to find a few essential chemicals, to no avail. I was wondering if anybody knew if potassium and ammonium perchlorate are legal to import into Canada? If so, I...

Tech_Junkie - You are absolutely right, and I have to agree with you in saying this is f***ed up. However, I think you are being a little bit paranoid when you worry about being watched. Unless you are a suspect of terrorism or someone highly involved in the black market (or a very "important"...

I completely forgot about that song! Eine Klein Nachtmusik and Fur Elise are definitely close matches. In fact, it's hard to say which classical song is indeed my favourite; I enjoy a plethora of classical music all across the gamut. AAlasers

These are my two favourite songs: Ludwig van Beethoven: Für Elise - YouTube mille - crysteena - YouTube Very contrasting genres haha, AAlasers

It is entirely possible to have a 10 watt "handheld" laser, but no less then five or six pounds. The way I see it, there are three ways to get your desired power level without buying an enormously expensive lab laser. 1) 445nm blue laser diode array. Get 6+ M140 diodes running at ~1.5A each...

Re: Stuff for sale Interested in one neon sign transformer (probably 9000v, 60ma), and perhaps one or two 10cm focal length lenses. Thanks, AAlasers

Very true, but you seem to be ignoring the rest of what I said, in my last post. I was referring to dealing with reflections from windows, and other reflective objects. I never said to be a complete idiot with a laser, as you insinuate, or to completely disregard laser safety. I am very well...