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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.
Two light switches in one box. The switch on the right is a dimmer switch. The switch box is covered by a decorative plate. The first light switch employing "quick-break technology" was invented by John Henry Holmes in 1884 in the Shieldfield district of Newcastle upon Tyne. [1]
The carbon button lamp is a single-electrode incandescent lamp invented by Nikola Tesla in the 1890s. [1] A carbon button lamp contains a small carbon sphere positioned in the center of an evacuated glass bulb.
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The headstone is typically arranged after the burial. The choice of materials (typically a long-lasting kind of stone, such as marble or granite) and the style and wording of the inscription is negotiated between the monumental mason and the family members. Because of the emotional significance of the headstone to the family members, monumental ...
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.