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Roblox Corporation. Roblox Corporation ( / ˈroʊblɒks / ROH-bloks) is an American video game developer based in San Mateo, California. Founded in 2004 by David Baszucki and Erik Cassel, the company is the developer of Roblox, which was released in 2006. As of December 31, 2023, the company employs over 2,400 people. [1]
The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; the pattern of position detection was found and determined by applying the least-used ratio (1:1:3:1:1) in black ...
Wheel 2000 Celebrity Wheel of Fortune. Wheel of Fortune (often known simply as Wheel [b]) is an American television game show created by Merv Griffin. The show has aired continuously since January 1975. It features a competition in which contestants solve word puzzles, similar to those in hangman, to win cash and prizes determined by spinning a ...
Pulse generators are available for generating output pulses having widths (duration) ranging from minutes to under 1 picosecond. Pulse generators are generally voltage sources, with true current pulse generators being available only from a few suppliers. Pulse generators may use digital techniques, analog techniques, or a combination of both ...
Ghostbusters (1984) Ghostbusters, the first film in the series, is a 1984 sci-fi comedy film about three New York City scientists. After they are fired from Columbia University, they start their own business investigating and capturing ghosts. Starring Bill Murray, Dan Aykroyd, Harold Ramis, Rick Moranis, Sigourney Weaver, Annie Potts, and ...
It is the cheapest source of industrial hydrogen, being the source of nearly 50% of the world's hydrogen. The process consists of heating the gas to 700–1,100 °C (1,300–2,000 °F) in the presence of steam over a nickel catalyst. The resulting endothermic reaction forms carbon monoxide and molecular hydrogen (H 2).
Frequency stability of 0.1 percent per hour for analog generators or 500 ppm for a digital generator. Maximum sinewave distortion of about 1% (accuracy of diode shaping network) for analog generators. Arbitrary waveform generators may have distortion less than -55 dB below 50 kHz and less than -40 dB above 50 kHz.
A wind turbine is a device that converts the kinetic energy of wind into electrical energy. As of 2020, hundreds of thousands of large turbines, in installations known as wind farms, were generating over 650 gigawatts of power, with 60 GW added each year. [1]
A portable wireless controlled battery powered X-ray generator for use in non-destructive testing and security. Gamma radiation sources, most commonly iridium-192 and cobalt-60, are used to inspect a variety of materials. The vast majority of radiography concerns the testing and grading of welds on piping, pressure vessels, high-capacity ...
To express the efficiency of a generator or power plant as a percentage, invert the value if dimensionless notation or same unit are used. For example: A heat rate value of 5 gives an efficiency factor of 20%. A heat rate value of 2 kWh/kWh gives an efficiency factor of 50%. A heat rate value of 4 MJ/MJ gives an efficiency factor of 25%.
