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Doppler effect. The emitted signal toward the car is reflected back with a variation of frequency that depends on the speed away/toward the radar (160 km/h). This is only a component of the real speed (170 km/h). The Doppler effect (or Doppler shift), named after Austrian physicist Christian Doppler who proposed it in 1842, is the difference ...
Synthetic-aperture radar ( SAR) is a form of radar that is used to create two-dimensional images or three-dimensional reconstructions of objects, such as landscapes. [ 1] SAR uses the motion of the radar antenna over a target region to provide finer spatial resolution than conventional stationary beam-scanning radars.
Continuous-wave radar (CW radar) is a type of radar system where a known stable frequency continuous wave radio energy is transmitted and then received from any reflecting objects. [1] Individual objects can be detected using the Doppler effect , which causes the received signal to have a different frequency from the transmitted signal ...
CNET. CNET (short for "Computer Network") [ 1] is an American media website that publishes reviews, news, articles, blogs, podcasts, and videos on technology and consumer electronics globally. CNET originally produced content for radio and television in addition to its website before applying new media distribution methods through its internet ...
Southern California. Lifeguard! Southern California is an American reality television series on The Weather Channel and narrated by Christopher Emerson which puts cameras on Southern California beaches from Los Angeles County in the north to San Diego County in the south. The cameras follow real life lifeguards and harbor patrol officers along ...
KALB began broadcasting on September 29, 1954, with NBC's airing of the 1954 World Series. [2] It aired an analog signal on VHF channel 5. The station has been an NBC affiliate from day one, although it also carried programs from the classic big four networks, until DuMont folded in 1955 and cable penetration in the early 1960s provided various network affiliates from Lafayette, Baton Rouge ...
Channel 5 (web series) Channel 5. (web series) Channel 5 (also known as " Channel 5 with Andrew Callaghan " on YouTube) is an American digital media company and web channel, billed as a "digital journalism experience." [ 2] The show is a spinoff of the group's previous project, All Gas No Brakes, which was itself based on the book of the same name.
The Great California ShakeOut 2009 attracted 6.9 million participants. The 2010 drill occurred on October 21 and attracted 7.8 million participants. [4] [5] In 2012 the drill involved 9.4 million participants, and for the first time, the drill included the region's rail system. [6] In 2017, more than 10 million participants were involved. [7] [8]
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