Our ancestors with a candle at a distance of one foot from a book were as well off as we are with an incandescent light four feet away.

Two shadows of the rod will fall on the screen, one caused by the candle and the other caused by the incandescent light.

Now let the incandescent light be moved away from the screen until the two shadows are of equal darkness.

If the incandescent light is four times as far away from the screen as the candle, and the shadows are equal, we know, by Section 100, that its strength is sixteen candle power.

If the incandescent light is four times as far away from the screen as the candle is, its power must be sixteen times as great, and we know the company is furnishing the standard amount of light for a sixteen candle power electric bulb.

Recently, however, that has been widely replaced by use of a Bunsen flame upon an incandescent mantle, such as the Welsbach.

Welsbach made use of this fact to secure a burner in which the illumination depends upon the glowing of an incandescent, solid mantle, rather than upon the blazing of a burning gas.

By actual experiment, it has been found that an ordinary burner consumes about five times as much gas per candle power as the best incandescent burner, and hence is about five times as expensive.

Although the flame is surrounded by air, the central portion of it does not receive sufficient oxygen to burn up the numerous carbon particles constantly thrown off by the burning gas, and hence many carbon particles remain in the flame as glowing, incandescent masses.

The incandescent bulbs which illuminate our buildings consist of a fine, hairlike thread inclosed in a glass bulb from which the air has been removed.

A small dynamo, such as is used for lighting fifty incandescent lamps, has a horse power of about 33.5, and large dynamos are frequently as powerful as 7500 horse power.

The fire burned brightly, and the soft radiance of the incandescent lights in the lilies of silver caught the bubbles that flashed and passed in our glasses.

The whole gamut of light sources has been run, from oil wicks to incandescent oil vapor (1913) to electricity (1929).

US Golf R version features a slightly detuned engine producing and . The North American version also shipped with incandescent tail lights, identical to the ones found on the GTI, instead of the LED tail lights used in the rest of the world.

This station as well as Fort Hamilton Parkway were the last underground stations to have fluorescent lighting installed on the platforms, which replaced incandescent lighting in 1987.

Their burning voltage was under 200 V, but they needed optical priming by an incandescent 2-Watt lamp and a voltage surge in the 5-kV range for ignition.

The station was automated on 7 January 1959 and the dioptric lens with its revolving machine and vaporised paraffin incandescent burner were replaced by a new fourth order cylindric refractor lens.

Seven-segment displays may use a liquid crystal display (LCD), a light-emitting diode (LED) for each segment, or other light-generating or controlling techniques such as cold cathode gas discharge, vacuum fluorescent, incandescent filaments, and others.

Starting in 1970, RCA sold a display device known as the "" that used incandescent filaments arranged into a seven-segment display.

In 1910, a seven-segment display illuminated by incandescent bulbs was used on a power-plant boiler room signal panel.