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    Laser Spark plugs

    Somebody has made some LASER spark plugs that are more efficient than regular spark pugs and he thinks they can be made cheaply enough to be practical. They deliver a ultra short pulse with an intensity of 100 gigawatts per square centimeter. For more see: Laser sparks revolution in internal...
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    Beam Divergence?

    I need a little help understanding the specifications for Lasers. I just bought a 400 mw green LASER that has a beam diameter of 1.5mm at aperture and that's self explanatory, but it says Beam Divergence is 1.5mRad. I don't know what that means, how big would the beam diameter be at 100...
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    Too good to be true?

    I'd like to hear the opinion of these 2 LASERS from Gadgettown, both are 1000mw green and under $350, they seem too good to be true. 1000mW 532nm High-power Green Laser Pointer Black for Sale at GadgetTown.com 1000mW 1W 532nm High-power Green Laser Pointer Gray for Sale at GadgetTown.com...
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    Odd O-Like pricing

    Hi, I'm new so take pity. In looking at the O-like site I find a odd price structure for their green Lasers. They have a 350 mw IR filtered one for $295, but a 400 mw waterproof focusable one for only $205. This seems peculiar to me. Could it be that the more expensive one being IR filtered is...


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