Ads
related to: light fixture with protective cage cover
Search results
Results From The WOW.Com Content Network
A trouble light using a compact fluorescent lamp. From top to bottom are a hook, a cage, the switch and a handle in one molding. A trouble light, also known as a rough service light, drop light, or inspection lamp, is a special lamp used to illuminate obscure places and able to handle moderate abuse.
Light fixtures may also have other features, such as reflectors for directing the light, an aperture (with or without a lens), an outer shell or housing for lamp alignment and protection, an electrical ballast or power supply, and a shade to diffuse the light or direct it towards a workspace (e.g., a desk lamp).
A lantern is a source of lighting, often portable. It typically features a protective enclosure for the light source – historically usually a candle, a wick in oil, or a thermoluminescent mesh, and often a battery-powered light in modern times – to make it easier to carry and hang up, and make it more reliable outdoors or in drafty interiors.
It emitted an oil-fuelled, fixed white light over 342 degrees, with a fifth-order lens giving a nominal range of 11.5 nautical miles. In May 1886 a bell, controlled by clockwork, was added. In 1905 a device was installed to cover the light for five seconds every minute to distinguish it from the fixed lights of vessels on the river.
Sulfur lamp inside a Faraday cage, which is necessary to prevent microwave radiation leakage from the magnetron which would cause radio interference. The sulfur lamp (also sulphur lamp) is a highly efficient full-spectrum electrodeless lighting system whose light is generated by sulfur plasma that has been excited by microwave radiation.
Flat-wick lamps have the lowest light output, center-draft round-wick lamps have 3–4 times the output of flat-wick lamps, and pressurized lamps have higher output yet; the range is from 8 to 100 lumens. A kerosene lamp producing 37 lumens for 4 hours per day for a month (120 hours) consumes about 3 litres (6.3 US pt; 5.3 imp pt) of kerosene.