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Electrolier is a light fixture that holds electric lamps. [1] Normally, the term designates an elaborate light fixture suspended from above, such as a large, multi-bulb pendant light . Additionally, the term is used by architects in the United States to refer to electric street lights or any exterior light fixture mounted on a pole or standard.
A chandelier (/ ˌ ʃ æ n d ə ˈ l ɪər /) is an ornamental lighting device, typically with spreading branched supports for multiple lights, designed to be hung from the ceiling. [ 1 ] [ 2 ] Chandeliers are often ornate, and they were originally designed to hold candles, but now incandescent light bulbs are commonly used, [ 3 ] as well as ...
The PD measuring instruments referred to as a pupillometers are optical devices that rest on the nose bridge similar to eyeglass frames and work by sighting the corneal reflection produced by an internally-mounted coaxial light source (e.g. Essilor Corneal Reflection Pupillometer [34]). These instruments are most commonly used for fitting ...
A Morse code light is light in which appearances of light of two clearly different durations (dots and dashes) are grouped to represent a character or characters in the Morse Code. For example, "Mo(A)" is a light in which in each period light is shown for a short period (dot) followed by a long period (dash), the Morse Code for "A".
A variety of rulers A carpenter's rule Retractable flexible rule or tape measure A closeup of a steel ruler A ruler in combination with a letter scale. A ruler, sometimes called a rule, scale or a line gauge or metre/meter stick, is an instrument used to make length measurements, whereby a length is read from a series of markings called "rules" along an edge of the device. [1]
LED chandeliers also have a longer lifespan compared to traditional lighting options. LED bulbs can last up to 25 times longer, reducing the frequency of bulb replacements and maintenance efforts. The largest LED Chandelier is 65 feet long and 32 feet wide which is in a shopping mall in Trinidad and Tobago.
Genaille–Lucas rulers (also known as Genaille's rods) are an arithmetic tool invented by Henri Genaille, a French railway engineer, in 1891. The device is a variant of Napier's bones . By representing the carry graphically, the user can read off the results of simple multiplication problems directly, with no intermediate mental calculations .