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I have 2 non-contact thermometers here at home (see below). I will try this tonight and report back. Very interesting. One thing nobody has raised yet is this, even of the final calculated result is not very accurate, this should provide good A/B testing for comparing various lasers... I...

Hi Andy, can you recommend a good link/resource for those who have not done it before? I am at a loss as to what you even use. I have seen a fair few images here and there (PL included) but I don't get it. A lot of the images and posts assume a certain amount of knowledge on the subject. Cheers.

Looks like this is going to be a nice build. I am awaiting arrival of 4 PBS ordered via PL, for my 445 lab build for my 2nd projector. I have always been curious about "knife edging" but have yet to see a simple example and explanation...

The last few months I have been running my first projector for 3-4 hours each night. Having way too much fun programming effects... I don't usually watch TV as the emission is non-coherent.

Checkout IrfanView - Official Homepage - one of the most popular viewers worldwide Image viewer (nice) and also you can resize, crop, add effects etc... (Free) It is my #1 choice for Windows platform. For something more photoshop like I use Gimp (free).

More random goodness from the interwebs... This one is the T_J, when building Steampunk cogs and gears, they do NOT have to be round! YouTube - These Gears Really Work? Anyone for laser cooked popcorn? YouTube - Laser Popcorn! EDIT: I just had to add this incredible video...

What the hell!

I am looking for an optical bench plate and found these. Does anyone have any comments on these? are they good value? Anchor Optics - English Bench Plates Cheers, Wayne.

1.5A hey? What is the expected CW life of these LD at this current (assuming an excellent heatsink such as labby)?

And now for something completely different.

True. Just like sex. The best fun money can buy.

I found this good intro video to lasers that answers many of the basics for beginners. Maybe this could be added to a sticky? The Art And Science Of Laser F/X - Video

eBay. or CapsGallery 1

I don't.

I am afraid it is only a translator. It can translate Vogon poetry (although not recommended) and a thousand other alien dialects. Converting senseless dribble in to sensible English is however beyond it's capabilities...

It's a shame he did not take high-speed video of it firing. I am sure the whole vessel jumps and the flash is also visible. This would make a great door-bell! Just what you need when the Morman's come knocking lol, :evil groin: snicker sniff.

I have no problems at all. I use my Babel Fish Universal Translator.

As photons do not carry a charge you will not see any change even with very large magnetic fields. Only warped space/time will effect the path (curved). There are spectra changes due to strong electric fields. Google Stark Effect, Zeeman Effect and Paschen-Bach Effect.

The lines are wings, caused by internal lens reflections. Normal for this type of LD.

No! Just crush your rocks. :crackup: You know you want it.