High Pressure Mercury Vapour Lamp Uses

Marty goodman in his history of electric lighting cites hewitt as inventing the first enclosed arc type lamp using metal vapor in 1901.

High pressure mercury vapour lamp uses.

High pressure sodium lamp hps lamp the hps lamp is the most ubiquitous lamp for street lighting on the planet. This lamp has a highly stable output predominantly at the 253 7 nm mercury line. Low pressure and high pressure low pressure sodium lamps are highly efficient electrical light sources but their yellow light restricts applications to outdoor lighting such as street lamps where they are widely used. In either case the outer bulb provides thermal insulation protection from the ultraviolet radiation the.

The mercury vapor lamp is a high intensity discharge lamp. It uses an arc through vaporized mercury in a high pressure tube to create very bright light directly from it s own arc. The outer bulb may be clear or coated with a phosphor. The mercury vapor fluorescent lamps can be either of low pressure lp or medium pressure mp i e gas pressure inside the lamp with nominal power that may vary in the ranges 4 115 w and 400 17 000 w philips 2017 respectively.

The arc then heats up the mercury and the mercury vapor then lights giving the lamp a bluish color. Mercury vapor lamps are gas discharge lamps that uses an electric arc through vaporized mercury to produce light. In such lamps there is also much stronger spectral broadening. A sodium vapor lamp is a gas discharge lamp that uses sodium in an excited state to produce light at a characteristic wavelength near 589 nm.

In 1934 edmund germer created a high pressure arc lamp that could handle a lot more power in a smaller space. It was a low pressure mercury arc lamp. Most models produce a bluish white light. This is different from fluorescents which use the mercury vapor arc to create a weaker light that mainly creates uv light to excite the phosphors.

January 01 2009 06 33 10 pm author. Two varieties of such lamps exist. Mercury vapor lamps were the first high intensity discharge lamps to be commercially available for a wide variety of lighting applications. The lamp is an improvement over the lps lamp in that it has more acceptable color with the great efficiency of the sodium lamp.

A mercury vapor lamp is a gas discharge lamp that uses an electric arc through vaporized mercury to produce light the arc discharge is generally confined to a small fused quartz arc tube mounted within a larger borosilicate glass bulb. Form109 i wouldnt say im the most experienced as this is my first high pressure sodium fixture the voltage provided by the hps is simply to low to keep the mercury vapor lamp lit. High pressure mercury vapor arc lamps a type of high intensity discharge lamps are operated with a pressure of the order of one atmosphere and with much increased power densities so that more mercury is evaporated the high density of the vapor allows for light emission with a much higher radiance.