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Bake-out, in several areas of technology and fabrication, and in building construction, refers to the process of using high heat temperature (), and possibly vacuum, to remove volatile compounds from materials and objects before placing them into situations where the slow release of the same volatile compounds would contaminate the contents of a container or vessel, spoil a vacuum, or cause ...
The Sussmann lamp [58] was introduced into Britain in 1893 and following trials at Murton Colliery in Durham it became a widely used electric lamp with 3000 or so reported by the company in use in 1900 [59] However, by 1910 there were only 2055 electric lamps of all types in use – about 0.25% of all safety lamps. [60]
This is usually achieved by using a thin tungsten strip, which will burn up in the presence of air, to connect one of the electrodes. Typical mercury-vapor lamps with an outer envelope made of soda lime or borosilicate glass still allow a relatively large amount of 365 nm UV radiation to escape the lamp.
The act applied only to cotton textile mills and required employers to keep premises clean and healthy by twice yearly washings with quicklime, to ensure there were sufficient windows to admit fresh air, and to supply "apprentices" (i.e., pauper and orphan employees) with "sufficient and suitable" clothing and accommodation for sleeping. [15]
Mechanical room in a large office building. Mechanical room in federal building, Los Angeles, California. A mechanical room, [1] boiler room or plant room is a technical room or space in a building dedicated to the mechanical equipment and its associated electrical equipment, as opposed to rooms intended for human occupancy or storage.
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An acetylene gas miner's lamp. A carbide lamp or acetylene gas lamp is a simple lamp that produces and burns acetylene (C 2 H 2), which is created by the reaction of calcium carbide (CaC 2) with water (H 2 O). [1] Acetylene gas lamps were used to illuminate buildings, as lighthouse beacons, and as headlights on motor-cars and bicycles. Portable ...
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