hõõglampides

Hõõglampides refers to incandescent light bulbs. These are a type of electric light that produces light by means of a wire filament, usually made of tungsten, that heats up to a high temperature when an electric current passes through it. The filament is enclosed in a glass bulb filled with an inert gas or a vacuum to prevent oxidation and prolong its life. When the filament becomes hot enough, it glows and emits visible light.

The invention of the practical incandescent light bulb is attributed to Thomas Edison, although many inventors contributed to its development. The first commercially successful incandescent lamp was demonstrated by Edison in 1879. Incandescent lamps were the dominant form of artificial lighting for over a century due to their low manufacturing cost and warm light quality.

However, incandescent bulbs are very inefficient. A significant portion of the electrical energy they consume is converted into heat rather than light. This inefficiency led to their gradual replacement by more energy-efficient lighting technologies such as fluorescent lamps and light-emitting diodes (LEDs). Many countries have phased out the production and sale of incandescent bulbs to promote energy conservation. Despite their decline, incandescent lamps are still used in some specialized applications where their specific light characteristics or low initial cost are advantageous.