For 90 years its light source was two arc lamps, but they were replaced in 1995 by a Metal-halide lamp.

Metal-halide lamps are used because they output an ideal color temperature and a broad spectrum of color.

* Metal-halide ( MH ) lamps

Metal-halide lamps have high luminous efficacy of around 75-100 lumens per watt, about twice the efficiency of mercury vapor lights and 3 to 5 times that of incandescent lights, moderately long bulb life ( 6, 000 to 15, 000 hours, a little shorter than mercury lamps ) and produce an intense white light.

Metal-halide lamps are used both for general lighting purposes, and for very specific applications that require specific UV or blue-frequency light.

Metal-halide lamps consist of an arc tube with electrodes, an outer bulb, and a base.

Displayed as lamps, the puppets delight the children and are decorative accent.

Why are we waiting for the lamps?

), a rhetorical question (" Why are we waiting for the lamps?

Sources of electromagnetic noise are power lines, radio and television stations, wireless devices, Compact fluorescent lamps and electric motors.

Continuum sources, such as deuterium lamps, are only used for background correction purposes.

Hollow cathode lamps ( HCL ) are the most common radiation source in LS AAS.

Deuterium HCL or even hydrogen HCL and deuterium discharge lamps are used in LS AAS for background correction purposes.

The color of the lamps varies by jurisdiction ; typical colors are blue and / or red for police, fire, and medical-emergency vehicles ; amber for tow trucks, security personnel, and construction vehicles ; green for volunteer firefighters, and violet for funerary vehicles.

Electric lights are most common, with halogen lamps being standard and white LEDs as the new competing technology.

Carbide lamps systems are an older form of illumination, inspired by miner's equipment, and are still used by some cavers.

Hot electron emitters are also used as the electrodes in fluorescent lamps and in the source tubes of X-ray machines.

The lamps that hang over the stone are contributed by Armenians, Copts, Greeks and Latins.

Resembling railway signals, they use semaphore arms and are illuminated at night by red and green gas lamps.

The two main families of electric light are incandescent lamps, which produce light by a filament heated white-hot by electric current, and gas-discharge lamps, which produce light by an electric arc through a gas.

For those who enjoy their garden at any time, there are also night accessories which include candle lanterns, oil lamps, patio torches, and illuminations.

Pratt's product later gave rise to the slogan, " The holy lamps of Tibet are primed with Astral Oil.

To increase plant growth, lighting systems such as metal halide lamps for growing stage only or high-pressure sodium for growing / flowering / blooming stage are used to lengthen the day or to supplement natural sunshine if it is scarce.

( Beeswax for candles and olive oil for oil lamps are preferred because they burn very cleanly, although other materials are sometimes used.

Kerosene lamps are widely used for lighting in rural areas of Asia and Africa where electrical distribution is not available or too costly for widespread use.

These types of lamps are still in use today in areas of the world without electricity, because they give a much better light than a simple wick-type lamp does ..

Blasphemy is to be punished with death, and rules for the eating of sacrifices are set out ; the calendar is explained, and rules for sabbatical and Jubilee years set out ; and rules are made for oil lamps and bread in the sanctuary.

The radiation intensity emitted by these lamps is decreasing significantly with increasing wavelength, so that they can be only used in the wavelength range between 190 and about 320 nm.

These same visible lines, accompanied by the emission lines of trivalent europium and trivalent terbium, and further accompanied by the emission continuum of divalent europium in the blue region, comprise the more discontinuous light emission of the modern trichromatic phosphor systems used in many compact fluorescent lamp and traditional lamps where better color rendition is a goal.

# Vardhamanaka-A shallow earthen dish used for lamps, suggests an increase in wealth, fame and merit due to a Jina's grace.

At one time, the fuel was widely used in kerosene lamps and lanterns.

A lighthouse is a tower, building, or other type of structure designed to emit light from a system of lamps and lenses and used as an aid to navigation for maritime pilots at sea or on inland waterways.

The use of full cutoff fixtures can allow for lower wattage lamps to be used in the fixtures, producing the same or sometimes a better effect, due to being more carefully controlled.

LEDs are used as indicator lamps in many devices and are increasingly used for other lighting.

The first commercial LEDs were commonly used as replacements for incandescent and neon indicator lamps, and in seven-segment displays, first in expensive equipment such as laboratory and electronics test equipment, then later in such appliances as TVs, radios, telephones, calculators, and even watches ( see list of signal uses ).

Main light sources used during the time it was invented in the late 16th century were candles or oil lamps.

Neon gives a distinct reddish-orange glow when used in either low-voltage neon glow lamps or in high-voltage discharge tubes or neon advertising signs.

It is commonly used in cooking, cosmetics, pharmaceuticals, and soaps and as a fuel for traditional oil lamps.

Historically, photolithography has used ultraviolet light from gas-discharge lamps using mercury, sometimes in combination with noble gases such as xenon.

From the early 1960s through the mid-1980s, Hg lamps had been used in lithography for their spectral lines at 436 nm (" g-line "), 405 nm (" h-line ") and 365 nm (" i-line ").

Serial ports of personal computers are also sometimes used to directly control various hardware devices, such as relays or lamps, since the control lines of the interface can be easily manipulated by software.

Sodium vapor lamps are often used for street lighting in cities and give colours ranging from yellow-orange to peach as the pressure increases.

It is commonly an unwanted by-product of fires ( including stoves, candles, oil lamps, and fireplaces ), but may also be used for pest control ( cf.

This spectrum of radiation has germicidal properties, and is used in germicidal lamps.