Commitment to quality and innovation
[22 มีนาคม 2564 10:56 น.]จำนวนผู้เข้าชม 3149 คน
Our polyester and T/C product lines are continually being added and updated. Nevertheless, we are still driven by our commitment to quality and innovation. Please call or email us for the latest prices and stock list.
A laser pointer or laser pen is a small handheld device with a power source (usually a battery) and a laser diode emitting a very narrow coherent low-powered laser beam of visible light, intended to be used to highlight something of interest by illuminating it with a small bright spot of colored light.50mW Laser Pointers Power is restricted in most jurisdictions not to exceed 5 mW.The small width of the beam and low power of typical laser pointers make the beam itself invisible in a reasonably clean atmosphere, only showing a point of light when striking an opaque surface.100mW puntero láser verde Some higher-powered laser pointers project a visible beam via scattering from dust particles or water droplets along the beam path. Higher-power and higher-frequency green or blue lasers may produce a beam visible even in clean air because of Rayleigh scattering from air molecules,3000mW Laser Pointer especially when viewed in moderately-to-dimly lit conditions. The intensity of such scattering increases when these beams are viewed from angles near the beam axis. Such pointers,ticularly in the green-light output range, ar used as astronomical-object pointers for teaching purposes.
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