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The magnetic detector or Marconi magnetic detector, sometimes called the "Maggie", was an early radio wave detector used in some of the first radio receivers to receive Morse code messages during the wireless telegraphy era around the turn of the 20th century.
Cryogenic particle detectors; Dew warning; Diffusion tensor imaging; Digital holography; Electronic tongue; Fine Guidance Sensor; Flat panel detector; Functional magnetic resonance imaging; Glass break detector; Heartbeat sensor; Hyperspectral sensors; IRIS (Biosensor), Interferometric Reflectance Imaging Sensor; Laser beam profiler; Littoral ...
The transmission is normally direct rather than superimposed or modulated upon a carrier, though multi-channel systems have been implemented using modulation. Many hearing aids contain a telecoil which allows the user to receive and hear the magnetic field and remove the normal audio signal provided from the hearing aid microphone site. [5]
Magnetic Anomaly Detector (MAD) P-2 Neptune, P-5 Marlin, S-2 Tracker: AN/ASQ-81: Magnetic Anomaly Detector (MAD) Light Airborne Multi-Purpose System (LAMPS) equipped helicopters, P-3 Orion, S-3 Viking: AN/ASQ-119: Stellar navigation Astrotracker astrocompass: FB-111A Aardvark: Litton Industries: AN/ASQ-153: Pave Spike electro-optical laser ...
While a typical motor vehicle has a sufficient mass of metal such as steel that interacts with the sensor's magnetic field, [7] motorcycles and scooters have much less mass than cars, and bicycles may not even be constructed with metal. This situation most often occurs at the times of day when other traffic is sparse as well as when the small ...
A Southern California business owner convinced victims to invest in his companies, claiming he could detect Covid-19 based on video, and then made lavish purchases, prosecutors said.
The magnetic pole moved along the northern Canadian shore for centuries, Dr Brown said. It drifted into the Arctic Ocean in the 1990s, and after that, it accelerated and headed towards Siberia.
The top court in the battleground state of Georgia ruled on Monday that Cobb County cannot extend the deadline for counting about 3,000 absentee ballots that were sent out shortly before Election ...