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  1. N

    Powell lens and power reduction?

    Hi everybody, i ve been thinking in a very low cost PIV system for analyzing the hydrodynamic of flocs particles in cloudy water. I bought: dsrl camera @60 fps 1080p( to record the sludge) , a macro lens 1:1 ,a 200mw green module diode laser(i chose the potency from suggestions from other...
  2. N

    75, 1500 or 200mw? Which power?

    Greetings friends, I have two questions about the selection of laser for an experiment at my university which consists of illuminating with green laser and an aerial lens (to generate a planar beam) a sample of cloudy water. The water will be contained in a 4mm thick transparent acrylic...