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Historians Robert Friedel and Paul Israel list inventors of incandescent lamps prior to Joseph Swan and Thomas Edison of General Electric. [4]: 91–93 They conclude that Edison's version was the first practical implementation, able to outstrip the others because of a combination of four factors: an effective incandescent material; a vacuum higher than other implementations which was achieved ...
An electric light, lamp, or light bulb is an electrical component that produces light. It is the most common form of artificial lighting. Lamps usually have a base made of ceramic, metal, glass, or plastic which secures the lamp in the socket of a light fixture, which is often called a "lamp" as well. The electrical connection to the socket may ...
The flame itself is not incandescent, as its blue color comes from the quantized transitions that result from the oxidation of CH radicals. Incandescence is the emission of electromagnetic radiation (including visible light) from a hot body as a result of its high temperature. [1] The term derives from the Latin verb incandescere, to glow white ...
The Centennial Light is an incandescent light bulb recognized as the oldest known continuously operating light bulb. It was first illuminated in 1901, and has only been turned off a few brief times since. It is located at 4550 East Avenue, Livermore, California, and is open to public viewing. [1] Due to its longevity, the bulb has been noted by ...
A flashbulb memory is a vivid, long-lasting memory about a surprising or shocking event. [1][2] The term "flashbulb memory" suggests the surprise, indiscriminate illumination, detail, and brevity of a photograph; however, flashbulb memories are only somewhat indiscriminate and are far from complete. [2] Evidence has shown that although people ...
While many people may look at wattage (i.e., the amount of energy that a bulb uses to produce light) before buying a light bulb, color temperature needs to be an important factor as well.
Flashlight. A set of LED flashlights. The angle-head flashlight (Fulton MX-991U) on the left uses an incandescent bulb, while the adjustable angle-head flashlight (Streamlight Sidewinder) on the right uses LEDs to give white, red, blue, and infrared light. A flashlight (US English) or electric torch (Commonwealth English), usually shortened to ...
A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow.