A photomultiplier tube, useful for light detection of very weak signals, is a photoemissive device in which the absorption of a photon results in the emission of an electron. These detectors work by amplifying the electrons generated by a photocathode exposed to a photon flux.
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Multiple published studies have shown good effects of laser acupuncture for the following conditions: hiccups, bed wetting, weight loss, post-operative nausea and vomiting, pain control, surgical anesthesia, dental anesthesia, carpal tunnel syndrome, dry eyes, and stroke-related paralysis. Obviously, as more studies are performed, more information will be found.
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