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  1. J

    Has anyone experience a laser injury?

    LOL:whistle:
  2. J

    My Solid State Tesla Coil (Music Modulated)

    CD4046 + CD 4049 IRFP460 MOSFET Half-bridge run on 220V https://www.youtube.com/watch?v=BDIB_z0R5Eg
  3. J

    High Powered Laser FAQs- All your questions answered here.

    Quote: 34. Green Lasers over 1W 520nm: Can you really see this from outer space?(lol) I may add : You cannot see the beam, because of lack of Rayleigh scattering. But could shine a target.
  4. J

    Has anyone experience a laser injury?

    I have temporary eye damage on 405nm and 532nm. Consider that 405nm got shorter wavelength and higher energy and 405nm have spectrum at 380nm, it pretty danger. 10mW 405nm spend me one month from recover my eye damage, one blue-black spot on my eye. For 532nm, it's do less damage, 100mW without...
  5. J

    Who have this 520nm laser?

    This 520nm laser seems cool, from JetLaser. It claim laser have AC plug... They use NDG7475 laser diode with 1.8-2mrad beam spread angle. If anyone have it, share your experience :D https://youtu.be/3XNpba1lxhA
  6. J

    CO2 laser

    Oh, such a danger scence will happen if reverse polority. DAMN!
  7. J

    CO2 laser

    I don't know about CO2 laser. Some question I want to ask... 1. CO2 laser company said nerver reverse polarity, but what happen if I reverse it? 2. If I don't use it long or just start a monent, is cooling really necessary?




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