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Edward Craven Walker (4 July 1918 – 15 August 2000) was a British inventor, [1] who invented the psychedelic Astro lamp, also known as the lava lamp. [ 2 ] [ 3 ] [ 4 ] War record
A lava lamp is a decorative lamp, invented in 1963 by British entrepreneur Edward Craven Walker, the founder of the lighting company Mathmos. It consists of a bolus of a special coloured wax mixture inside a glass vessel, the remainder of which contains clear or translucent liquid.
Rotring (stylized rOtring) is a manufacturer of technical drawing tools and writing implements. Established in Germany in 1928 as a fountain pen manufacturer, Rotring went on to be acquired by Newell Brands in 1998. [3] [1] The name "Rotring" directly translates to "red ring", which refers to the company's signature: a red band placed around ...
A wall of lava lamps at the offices of Cloudflare Random number generator based on lava lamp motion Lavarand , also known as the Wall of Entropy , is a hardware random number generator designed by Silicon Graphics that worked by taking pictures of the patterns made by the floating material in lava lamps , extracting random data from the ...
Aerolux Light Corporation was a manufacturer of artful gas-discharge light bulbs from the 1930s through the 1970s. [1] Aerolux made these bulbs in a factory in New York City.
The mercury-vapor lamp is a negative resistance device. This means its resistance decreases as the current through the tube increases. So if the lamp is connected directly to a constant-voltage source like the power lines, the current through it will increase until it destroys itself. Therefore, it requires a ballast to limit the current ...
Want to be more productive? Multitasking may not be the answer, experts say.
An HQI lamp consists of a protective outer glass shield surrounding two heavy wires which are inserted into each end of a smaller inner quartz arctube containing argon, mercury and metal halides. The lamp is powered by an electrical ballast , which regulates the current flow through the arc in the arctube, and an ignitor, to make the high ...
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