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A magnetic switchable device (often called a magnetic base) is a magnetic fixture that uses one or more permanent magnets in a configuration that allows the external field to be turned on or off. They are used in many applications including optics , metalworking , lifting , and robotics, to attach items to metal surfaces in a secure but ...
Original 16mm film reels of the vintage 1973 VertiBird Air Police spot (which also can be viewed on YouTube) were offered for sale on eBay on a few occasions in the past. Episode 12 in season 8 of the original TV series Hawaii Five-0 ("Honor is an Unmarked Grave", first aired on November 28, 1975) included a scene of a young boy flying a ...
The linear induction, Faraday flashlight, or "shake flashlight" is another type of mechanically powered flashlight. It has been sold in the US beginning with direct marketing campaigns in 2002. This design contains a linear electrical generator which charges a supercapacitor which functions similarly to a rechargeable battery when the ...
A set of modern LED flashlights. A flashlight or electric torch (Commonwealth English), usually shortened to torch, is a portable hand-held electric lamp.Formerly, the light source typically was a miniature incandescent light bulb, but these have been displaced by light-emitting diodes (LEDs) since the early 2000s.
The Kel-Lite was a highly-durable, weather- and shock-resistant flashlight (UK: torch), made of heavy 6061-T6 aluminium. According to company founder Donald Keller, a Los Angeles County Deputy Sheriff, he began working on the concept in 1964 as he was tired of the lack of durability of the generically available, cheap metal flashlights of the day; the prototype was largely designed by 1968. [1]
The magnetic base has a switch that allows you to turn the magnet on or off. When on, the magnet is very powerfull, and when off, it will attract and hold a paper clip but nothing bigger. I dissassembled the magnetic base on found that it consists of a block of metal with a cylindrical hole drilled thru its center.