16 Facts About Incandescent lamp

An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a wire filament heated until it glows.

Incandescent lamp bulbs are manufactured in a wide range of sizes, light output, and voltage ratings, from 1.

Incandescent lamp stated that he could "read a book at a distance of one and a half feet".

Incandescent lamp used as a burner two carbon rods of diminished section in a glass receiver, hermetically sealed, and filled with nitrogen, electrically arranged so that the current could be passed to the second carbon when the first had been consumed.

On 24 July 1874, a Canadian patent was filed by Henry Woodward and Mathew Evans for a Incandescent lamp consisting of carbon rods mounted in a nitrogen-filled glass cylinder.

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In 1882 Munich Electrical Exhibition in Bavaria, Germany Cruto's Incandescent lamp was more efficient than the Edison's one and produced a better, white light.

On 18 December 1878, a Incandescent lamp using a slender carbon rod was shown at a meeting of the Newcastle Chemical Society, and Swan gave a working demonstration at their meeting on 17 January 1879.

Incandescent lamp devised a method of treating cotton to produce 'parchmentised thread' in the early 1880s and obtained British Patent 4933 that same year.

In 1897, German physicist and chemist Walther Nernst developed the Nernst lamp, a form of incandescent lamp that used a ceramic globar and did not require enclosure in a vacuum or inert gas.

Since tantalum metal has a lower resistivity than carbon, the tantalum Incandescent lamp filament was quite long and required multiple internal supports.

On 13 December 1904, Hungarian Sandor Just and Croatian Franjo Hanaman were granted a Hungarian patent for a tungsten filament Incandescent lamp that lasted longer and gave brighter light than the carbon filament.

Incandescent lamp bulbs have a shorter life than most other lighting, an important factor if replacement is inconvenient or expensive.

Halogen Incandescent lamp reduces uneven evaporation of the filament and eliminates darkening of the envelope by filling the Incandescent lamp with a halogen gas at low pressure, along with an inert gas.

The halogen Incandescent lamp can operate its filament at a higher temperature than a standard gas filled Incandescent lamp of similar power without loss of operating life.

Variation of the incandescent lamp did not use a hot wire filament, but instead used an arc struck on a spherical bead electrode to produce heat.

Relationships above are valid for only a few percent change of voltage around standard rated conditions, but they indicate that a Incandescent lamp operated at low voltage could last much longer than at rated voltage, albeit with greatly reduced light output.