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This simple revelation also helped me come up with the calculation that a 250mW laser is = to 15 watts per minute. Or 15 joule/minute. Or 15 watt seconds over the course of a minute Now I need to figure out a way to calculate how much of this energy is absorbed by a medium..to do work..vs...

Ahhhh....I severely overcomplicated the matter. In my idiocy I failed to understand watts can inherently be translated into joules per SECOND. Which I suppose answers my own question. I would then assume a LPM measures watts by dividing the joules over a given interval. Is that correct?

And how LPM's actually calculate the CW power. Obviously with a pulsed configuration you can accurately say "it produces X for X period of time" and thats it..it delivered X energy to the target. Simple. But with continuous wave it is a cumulative effect...so if I wanted to determine how much...

This is a very cool looking build. It looks dangerous even to the untrained eye. Which is good. That big heat sink even if you have no idea wtf a heat sink is looks like serious business!

This is fantastic. I was just watching the lord of the rings and realized I want a laser embedded in a staff for hiking and camping. A 1 watt would make a convenient fire starter without knocking over my fire. And if its a staff it can be used for so much more! Sorry for bumping an old thread...

Real Genius Number 1 - YouTube How many of you loved, remember this movie.

I hope u didint ship it through UPS man.. I work at UPS. And man let me tell you ...you would not believe....what ive seen. one guy can only do so much, I make sure I take care of shit. But not everybody does. Shit busts open...people dont give a fuck..send it on its way ...shit will bust open...

Oh my bad. Not at all trying to discredit members...(but if it was shit they should know about it ;) not to make them feel bad but to make them improve :) Kinda like I need to do ) <3

Sayin u just bought it tho? Not bein an expert on lasers...but this sounds like a BUSINESS ISSUE. Id message those people and tell them they sent me a shitty product...and I want to exchange it ...or a refund. Like ..Airsplat. good guys..I got a shitty product. Broke in a week. I called em...

Sounds like me bro!!! I got a thread just like this below urs on beam divergance. Mine rattles like urs and the dot is bigger than it used to be.

This is amazing and I still have so much to learn ^_^. Im just looking at the specs as u said and it hit me that there is such a low current. I need to do more research on electrical theory. I was under the impression amperage was a representation of the amount of electrons, the "volume". And...

Ahh but if it doesnt necessitate using goggles and exposed beams and "danger stickers" around my garage then its hardly useful :whistle: But out of curiosity couldnt 50W burn/cut metal ...albeit very slowly and inefficiently? its enough power right..? Like thin sheets.

This might sound odd. Im thinking of actually doing something "useful" with a high power laser in the future. I play around cars a lot and it seems having a laser would be very handy for precision cutting of light materials such as plastics for various things on a small scale. And its much...

The line is again, not visible to my eye. It is a refractive issue with the camera.

Oh good. Now I can put my vice to use. ^_^. The lens is so far in there I get to take the host to pieces :)

Ah I want to apologize BTW for sending you more than one PM today. I failed to read through every page of the thread :). I understand now you must be getting a lot of questions ^_^.

the beam is also noticably less visible , probably because its spreading out more.. its got fresh energizers in it (not that those are the best batteries by far...but they r new ^_^) It used to be a nice bright hot spot. Now its just a big round glob. Intense of course...

Phone camera lens clearly has its own issues. The light is scattering off the camera, nothing I can do about it. The rays you are seeing are a result of the camera, those "rays" are not present to my eye.

I think I might buy one from you today or tomorrow. Itll be a better buy than what I was gonna get at LED shoppe. And I need an excuse to round out my laser safety goggle collection. I need more coloorrz.

I cant really get a good picture to show either. I only have a camera phone and the laser does wiierd things to it. I can get an image of the dot but its highly distorted..and no real way to scale it