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2. Track lighting - Wikipedia

   en.wikipedia.org/wiki/Track_lighting

   Track lighting is a method of lighting where light fixtures are attached anywhere on a continuous track device which contains electrical conductors. [1][2] This is in contrast to directly routing electrical wiring to individual light positions. Tracks can either be mounted to ceilings or walls, lengthwise down beams, or across rafters or joists ...

3. Timeline of lighting technology - Wikipedia

   en.wikipedia.org/wiki/Timeline_of_lighting...

   19th century. 1800–1809 Humphry Davy invents the arc lamp when using Voltaic piles (battery) for his electrolysis experiments. 1802 William Murdoch illuminates the exterior of the Soho Foundry with gas. 1805 Philips and Lee's Cotton Mill, Manchester was the first industrial factory to be fully lit by gas. 1809 Humphry Davy publicly ...

4. Knob-and-tube wiring - Wikipedia

   en.wikipedia.org/wiki/Knob-and-tube_wiring

   Earthing systems. v. t. e. Knob-and-tube wiring (sometimes abbreviated K&T) is an early standardized method of electrical wiring in buildings, in common use in North America from about 1880 to the 1930s. [1][2] It consisted of single-insulated copper conductors run within wall or ceiling cavities, passing through joist and stud drill-holes via ...

5. North American railroad signals - Wikipedia

   en.wikipedia.org/wiki/North_American_railroad...

   There are two main types of signaling aspect systems found in North America, speed signaling and weak route signaling. [citation needed] Speed signaling transmits information regarding how fast the train is permitted to be going in the upcoming segment of track; weak route signaling transmits information related to the route a train will be taking through a junction, and it is incumbent upon ...

6. Light fixture - Wikipedia

   en.wikipedia.org/wiki/Light_fixture

   Light fixture. A light fixture (US English), light fitting (UK English), or luminaire is an electrical lighting device containing one or more light sources, such as lamps, and all the accessory components required for its operation to provide illumination to the environment. [1] All light fixtures have a fixture body and one or more lamps.

7. A California Home Depot fired a 70-year-old woman who failed ...

   www.aol.com/finance/california-home-depot-fired...

   A 72-year-old California woman has sued Home Depot for age discrimination and wrongful termination after the retail giant fired her for failing to stop $5,000 in fraudulent transactions.