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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 ...
The device is simple: a transparent two-liter bottle is filled with water plus a little bleach to inhibit algal growth and fitted into a hole in a roof. The device functions like a deck prism : during daytime the water inside the bottle refracts sunlight, delivering about as much light as a 40–60 watt incandescent bulb to the interior.
Former Lava Lamp factory, at 1650 Irving Park Road, Chicago. British entrepreneur Edward Craven Walker had the idea for the lava lamp in 1963 after watching a homemade egg timer, made from a cocktail shaker filled with liquids, as it bubbled on a stovetop in a pub. [8] This precursor was designed and patented GB patent 703924 by Donald Dunnet. [9]
A balanced-arm lamp has a base, a stand or body, (in most cases) two connected arms (in many cases fitted with springs), and a lamp-head. The lamp can be moved into almost any position, and the balancing device will maintain the position until moved again. The same overall mechanism can be employed in other devices with similar requirements ...
Seal oil lamps. The Inuit oil lamps were made mainly of soapstone, but there are also some made of a special kind of pottery. [12] Sizes and shapes of lamps could be different, but most were either elliptical or half-moon shaped. [13] The taqquti or wick trimmers, also known as lamp feeders, were made of wood, willow, soapstone, bone or ivory. [14]
A miniature keychain lamp produces one or two lumens. A two-D-cell flashlight using a common prefocus-style miniature lamp produces on the order of 15 to 20 lumens of light [11] and a beam of about 200 candlepower. One popular make of rechargeable focusing flashlight uses a halogen lamp and produces 218 lumens. By comparison, a 60-watt ...
A carbon button lamp contains a small carbon sphere positioned in the center of an evacuated glass bulb. This type of lamp must be driven by high-frequency alternating current, and depends on an electric arc or perhaps a vacuum arc to produce high current around the carbon electrode.
The original Berger lamp used methyl alcohol, while modern lamps use isopropyl alcohol (90% or more). [5] Perfumes or essential oils may be added. To start the catalytic process it is necessary to allow the wick to thoroughly absorb the fuel and then to light the catalytic burner with a flame and let it burn for approximately two minutes until the catalytic stone reaches the correct operating ...
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