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    Home Made Nitrogen Laser and Dye Laser!

    I actually had seen your videos previously on YouTube! Great job!
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    Does wave-length/color make a difference?

    Not sure that I understand the question fully but... Power is energy divided by time. Since the energy of a photon is E=hf, where h is Planck's constant and f=c/lambda is the frequency (lambda is the wavelength), if you have the same power in a red and a blue laser, this just means that the red...
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    Newbie question: IR laser

    You should be careful with IR lasers as human tissue has a so-called "therapeutic window" between 650 and 1350nm, where light can easily penetrate the tissue. It is in fact pretty dangerous to even look at such a beam with the eyes closed, as the eyelid would be almost transparent to such...
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    Please remember to change the desktop background before a presentation

    Hahaha
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    Blu-ray 405nm laser collections

    You should try focusing them all into one spot and see what happens!
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