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  2. Bit error rate - Wikipedia

    en.wikipedia.org/wiki/Bit_error_rate

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate; Pages for logged out editors learn more

  3. Passive infrared sensor - Wikipedia

    en.wikipedia.org/wiki/Passive_infrared_sensor

    A passive infrared sensor ( PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors. PIR sensors are commonly used in security alarms and automatic lighting applications. PIR sensors detect general movement, but do not give ...

  4. SGR 1806−20 - Wikipedia

    en.wikipedia.org/wiki/SGR_1806%E2%88%9220

    SGR 1806−20 is a magnetar, a type of neutron star with a very powerful magnetic field, that was discovered in 1979 and identified as a soft gamma repeater. SGR 1806−20 is located about 13 kiloparsecs (42,000 light-years ) [ 1 ] from Earth on the far side of the Milky Way in the constellation of Sagittarius .

  5. Error detection and correction - Wikipedia

    en.wikipedia.org/wiki/Error_detection_and_correction

    Dynamic random-access memory (DRAM) may provide stronger protection against soft errors by relying on error-correcting codes. Such error-correcting memory, known as ECC or EDAC-protected memory, is particularly desirable for mission-critical applications, such as scientific computing, financial, medical, etc. as well as extraterrestrial ...

  6. Nondispersive infrared sensor - Wikipedia

    en.wikipedia.org/wiki/Nondispersive_infrared_sensor

    A nondispersive infrared sensor (or NDIR sensor) is a simple spectroscopic sensor often used as a gas detector.It is non-dispersive in the fact that no dispersive element (e.g a prism or diffraction grating as is often present in other spectrometers) is used to separate out (like a monochromator) the broadband light into a narrow spectrum suitable for gas sensing.

  7. Hulse–Taylor pulsar - Wikipedia

    en.wikipedia.org/wiki/Hulse–Taylor_pulsar

    The pulsar was discovered by Russell Alan Hulse and Joseph Hooton Taylor Jr., of the University of Massachusetts Amherst in 1974. Their discovery of the system and analysis of it earned them the 1993 Nobel Prize in Physics "for the discovery of a new type of pulsar, a discovery that has opened up new possibilities for the study of gravitation."

  8. Clarke Error Grid - Wikipedia

    en.wikipedia.org/wiki/Clarke_Error_Grid

    Region A are those values within 20% of the reference sensor, Region B contains points that are outside of 20% but would not lead to inappropriate treatment, Region C are those points leading to unnecessary treatment, Region D are those points indicating a potentially dangerous failure to detect hypoglycemia or hyperglycemia, and

  9. Ten-code - Wikipedia

    en.wikipedia.org/wiki/Ten-code

    California Penal Code sections were in use by the Los Angeles Police Department as early as the 1940s, and these Hundred Code numbers are still used today instead of the corresponding ten-code. Generally these are given as two sets of numbers [ citation needed ] —"One Eighty-Seven" or "Fifty-One Fifty"—with a few exceptions such as "459 ...

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