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Where noise is an issue, larger, slower-turning fans are quieter than smaller, faster fans that can move the same airflow. Fan noise has been found to be roughly proportional to the fifth power of fan speed; halving the speed reduces the noise by about 15 dB. [22] Axial fans may rotate at speeds of up to around 38,000 rpm for smaller sizes. [23]
It was not until the 1970s when fully programmable computers appeared that could fit entirely on top of a desk. 1970 saw the introduction of the Datapoint 2200, a "smart" computer terminal complete with keyboard and monitor, was designed to connect with a mainframe computer but that did not stop owners from using its built-in computational ...
Power is transmitted to the vehicle through resonance between the magnetic pad at the bottom of the charging space and the magnetic pad at the bottom of the vehicle. The transmitted power is stored in the battery through a converter in the vehicle system. It was applied on a trial basis at Genesis Motor EV charging station located in South ...
Schuyler Skaats Wheeler (May 17, 1860 – April 20, 1923) was an American electrical engineer and manufacturer who invented the electric fan, an electric elevator design, and the electric fire engine. He is associated with the early development of the electric motor industry, especially to do with training the blind in this industry for gainful ...
The Rookie is an American drama series created by Alexi Hawley for ABC. The series follows John Nolan, a man in his forties, who becomes the oldest rookie at the Los Angeles Police Department. The series is produced by ABC Studios and Entertainment One ; it is based on real-life Los Angeles Police Department officer William Norcross, who moved to Los Angeles in 2015 and joined the department ...
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