Light bulb

 

    The light bulb refers to a lighting source that emits light and heat through electrical energy. It was invented by Henry Goebbels in 1854, and Thomas Alva Edison found a more suitable material to develop an incandescent lamp. It consists of a thin glass casing, an inner filament, a base, and some wires. When current is passed through the filament, the filament is heated and emits light.

    Different types of bulbs have different shapes and brightness. Common bulb types include incandescent bulbs, fluorescent bulbs, LED bulbs, and halogen bulbs. With the continuous advancement of technology, more and more high-efficiency, low-energy bulbs are widely used in household, commercial and industrial fields.

 

    Light bulbs are made on the basis of the heating effect of electric current. After the bulb is connected to the rated voltage, the current passes through the filament and is heated to an incandescent state (above 2000C), so it generates heat and emits light, so that the electric energy is converted into internal energy and light energy during operation.

 

    The main function of a light bulb is to provide illumination, that is, to generate light to help people see their surroundings clearly. People usually use light bulbs indoors or outdoors to work, study or perform other activities at night or in low light conditions. In addition, bulbs can also be used as decorations, such as for interior lighting design or light show performances. In industrial and commercial fields, light bulbs can also be used as signal lights, indicator lights and safety lights. In short, light bulbs play a very important role in modern life, it provides us with a convenient, safe and comfortable lighting environment.