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A lightbulb socket, lightbulb holder, light socket, lamp socket or lamp holder is a device which mechanically supports and provides electrical connections for a compatible electric lamp base. [1] Sockets allow lamps to be safely and conveniently replaced (re-lamping).
The company was founded by Reuben Berkley Benjamin and filed its first patent for an electric lamp socket in 1898. The company went on to manufacture various other electrical products. One of Benjamin's most notable products was their series of non-contact fire alarm horns, introduced in the early 1920s. They were available in flush-mount ...
230/240-volt incandescent light bulb with E27 screw baseEdison screw (ES) is a standard lightbulb socket for electric light bulbs. It was developed by Thomas Edison (1847–1931), patented in 1881, [1] and was licensed in 1909 under General Electric's Mazda trademark.
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A bayonet mount A bayonet mount before and after insertion Early-19th century socket bayonet Socket of a bayonet. A bayonet mount (mainly as a method of mechanical attachment, such as fitting a lens to a camera using a matching lens mount) or bayonet connector (for electrical use) is a fastening mechanism consisting of a cylindrical male side with one or more radial pegs, and a female receptor ...
Row of graves with headstones (left) and footstones (right) in Snailwell, England. A footstone is a marker at the foot of a grave. The footstone lies opposite the headstone, which is usually the primary grave marker. As indicated, these markers are usually stone, though modern footstones are often made of concrete, or some metal (usually bronze ...
Headstone engravers faced their own "year 2000 problem" when still-living people, as many as 500,000 in the United States alone, pre-purchased headstones with pre-carved death years beginning with 19–. [8] Bas-relief carvings of a religious nature or of a profile of the deceased can be seen on some headstones, especially up to the 19th century.
A Video-Enhanced Grave Marker (VEGM) is a Western-style tombstone equipped with weatherproofed video playback that can be initiated by remote control.. The VEGM, invented by Robert Barrows of San Mateo, California, would allow its owner to record messages or have the deceased family leave messages to be played to any visitor to the site with a remote control.