• Development of Flashlight

    Development of Flashlight
    About the end of the 19th century, flashlights whose main features were tungsten filament bulb + alkaline battery, with the surface electroplated iron sheet as the shell were regarded as the first generation. The typical representative brands among the first generation flashlights were Eveready flashlight in USA and Tiger Head Flashlight in China. Compared with choosing carbon-filament bulbs, the first generation of flashlights generally...
  • What features should a medical flashlight include

    What features should a medical flashlight include
    Medical penlight plays a key role in patient assessment and medical treatment. Whether be a nurse or a doctor, checking pupil size and reaction with penlight allows medical practitioners to determine the severity of an injury or disease process, and also to track and trend a patient's status to see if the treatments have been provided well or not. There are several options for...
  • STROBE MODE

    STROBE MODE
    What is strobe mode?Nowadays, strobe flashlights have gained in popularity. The genesis of this phenomenon probably lurks in the manufacturers' aggressive advertising, a more economical price point on lights that have this feature, or the fact that strobe-mode lights have risen to the top of the latest "have to have" gear on many officers' lists. To put it in a simple way, strobe mode...
  • COLOR TEMPERATURE

    COLOR TEMPERATURE
    The color temperature of a light source is the temperature of an ideal black-body radiator that radiates light of a color comparable to that of the light source. In practice, color temperature is meaningful only for light sources that do in fact correspond somewhat closely to the radiation of some black body, i.e., light in a range going from red to orange to yellow...
  • LUMINOUS FLUX

    LUMINOUS FLUX
    Luminous flux, or luminous power, is the measure of the perceived power of light. It differs from the measure of the total power of light emitted, termed ‘radiant flux’, in that the former takes into account the varying sensitivity of the human eye to different wavelengths of light. In other words, it is photometrically weighted radiant flux (power). The SI unit of luminous flux...
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