A fluorescent lamp is a type of discharge lamp that produces light primarily through the emission of phosphors when exposed to ultraviolet (UV) radiation generated by an electric discharge. This process involves the excitation of mercury vapor inside the glass tube, which emits UV light as a byproduct of the electrical current passing through it. Fluorescent lamps are typically low-pressure mercury vapor arc discharge lamps. Most of the electrical energy consumed during the gas discharge is converted into electromagnetic radiation, mainly in the ultraviolet range. Approximately 63% of the energy is transformed into C-type ultraviolet radiation at wavelengths between 254 nm and 185 nm. Meanwhile, about 3% of the energy is directly converted into visible light during the discharge process, with dominant wavelengths including 405 nm (blue-violet), 436 nm (blue), 456 nm (green), and 577 nm (yellow). The ultraviolet light produced inside the lamp then interacts with the phosphor coating on the inner surface of the glass tube. When the phosphor absorbs the UV energy, it re-emits a portion of it as visible light. The overall visible light output from a standard fluorescent lamp—combining both the direct emission during discharge and the phosphor's luminescence—is roughly equivalent to 28% of the input energy. The efficiency and quality of light produced by a fluorescent lamp depend on several factors, such as the lamp’s physical dimensions (length and diameter), the type and pressure of the gas used inside, the composition and application of the phosphor, and the manufacturing techniques employed. These elements collectively influence the lamp’s brightness, color rendering, and overall performance.
Shackles are also required by national standards. Specification documents are given for their technical parameters such as thread size and ring diameter. This is very necessary. If there is no standard to regulate it, then its ring diameter will be made by someone. The result is that the lifting weight is not enough, which is prone to accidents. Let's look at the picture above. The shaft below it can be unscrewed. After putting on the wire rope, tighten the shaft to fix the wire rope inside. Otherwise, a circle of wire rope cannot be hooked. live it up.
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