Mercury-Quartz Lamp (Arc Tube Mercury Lamp) скачать в хорошем качестве

Mercury-Quartz Lamp (Arc Tube Mercury Lamp)

Mercury-Quartz Lamp (Arc Tube Mercury Lamp)A high pressure mercury-quartz lamp is a gas discharge lamp. It uses mercury in an excited state to produce light. Just as other lamps of this type it is a sealed tube with electrodes at its ends. The tube is made of quartz and filled with argon and mercury under high pressure. In Russian electronic science it is sometimes called the arc tube mercury lamp. To turn these lamps on starting-regulating devices are used with power range from 100 W to 12 kW.A distinctive feature of this lamp is a large portion of radiation generated in the ultraviolet range including a sub-range called hard ultraviolet.This determines spheres of its application. These lamps are not used for illumination as their emitted light spectrum is not suitable for these purposes. But what is more important, UV radiation is extremely dangerous for humans. It is especially harmful for eyes. If people stay in areas where mercury-quartz lamps are used then the lamps have to be hidden behind ultraviolet absorbing light filters or people must simply wear protective glasses.On the other hand this is exactly why such lamps are widely used. For instance, they are used in medicine as bacteria germicidal irradiators. They are also used for ultraviolet baths, skin disease treatment, and quartz treatment.While working in a room a high pressure mercury-quartz lamp produces ozone. High concentrations of ozone are extremely dangerous for humans. At the same time ozone also kills bacteria. This is why mercury-quartz lamps are used for disinfection treatment. After the treatment the room has to be aired so that excessive amounts of ozone are removed. In order to prevent appearance of ozone the bulbs are sometimes coated with titanium dioxide. In this case the ozone producing spectrum emitted by mercury is absorbed. In general, if used properly, these lamps can be used in healthcare and spheres of photophysics and photochemistry.