Phosphor, commonly known as luminous powder, is generally divided into luminous powder with photo energy storage and radioactive luminous powder.Photoelectric energy storage luminous powder is a kind of phosphor that stores light energy after being exposed to natural light, daylight light, ultraviolet light, etc., and then slowly releases it in the form of fluorescence after stopping light exposure, so it can still be seen at night or in darkness, lasting for several hours to more than ten hours.
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