What is the impact of the invention of electric light on human life?

The invention of electric light on human life: a great degree of convenience, but also make people's daily life more colorful, no longer sunset, promote the productivity of various industries and working hours, accelerated the development of various types of industry, service industry.

The common types of electric lights are incandescent, fluorescent, LED lights and so on. The earliest use of electric light is incandescent, but as early as before the birth of the incandescent lamp, the British Humphrey Davy with 2,000 batteries and two charcoal rods made of arc lamps, but the brightness of this arc lamp is too strong and too much heat is not durable, the general place simply can not be used.

Extended information:

Tungsten filament is the light inside the lamp, tungsten filament can be kept stable at very high temperatures and does not melt, but sublimates directly into a gas, and so on, after the light is turned off.

The electric lamp is a tungsten filament that can remain stable at very high temperatures without melting, but sublimates directly into a gas when the light is turned off, and the temperature drops, and the tungsten gas sublimates into a solid covering the inner wall of the bulb.

Lamps have a certain life expectancy, generally black, life is not long, black bulbs will affect the quality of lighting, but also unattractive, so with too long black bulbs as soon as possible to change out, especially conspicuous position, the need for good lighting to be changed as soon as possible, so as not to bulb suddenly out of the no spare bulb, the impact of the normal lighting and life, resulting in a variety of inconveniences.

Baidu Encyclopedia - Electric Light