What does feep mean?

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feep

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Wikipedia

  1. feep

    Field-emission electric propulsion (FEEP) is an advanced electrostatic space propulsion concept, a form of ion thruster, that uses a liquid metal as a propellant – usually either caesium, indium, or mercury. A FEEP device consists of an emitter and an accelerator electrode. A potential difference of the order of 10 kV is applied between the two, which generates a strong electric field at the tip of the metal surface. The interplay of electric force and the liquid metal’s surface tension generates surface instabilities, which give rise to Taylor cones on the liquid surface. At sufficiently high values of the applied field, ions are extracted from the cone tip by field evaporation or similar mechanisms, which then are electrically accelerated to high velocities – typically 100 km/s or more. Due to its very low thrust (in the micronewton (μN) to millinewton (mN) range), FEEP thrusters are primarily used for microradian, micronewton attitude control on spacecraft, such as in the ESA/NASA LISA Pathfinder scientific spacecraft. The FEEP thruster was also slated for installation on Gravity Field and Steady-State Ocean Circulation Explorer spacecraft, but the Gridded ion thruster was used instead. The first FEEP thruster operated in space was the IFM Nano Thruster, successfully commissioned in Low Earth Orbit in 2018.

The New Hacker's Dictionary

  1. feep

    1. n. The soft electronic ‘bell’ sound of a display terminal (except for a VT-52); a beep (in fact, the microcomputer world seems to prefer beep). 2. vi. To cause the display to make a feep sound. ASR-33s (the original TTYs) do not feep; they have mechanical bells that ring. Alternate forms: beep, ‘bleep’, or just about anything suitably onomatopoeic. (Jeff MacNelly, in his comic strip Shoe, uses the word ‘eep’ for sounds made by computer terminals and video games; this is perhaps the closest written approximation yet.) The term ‘breedle’ was sometimes heard at SAIL, where the terminal bleepers are not particularly soft (they sound more like the musical equivalent of a raspberry or Bronx cheer; for a close approximation, imagine the sound of a Star Trek communicator's beep lasting for five seconds). The ‘feeper’ on a VT-52 has been compared to the sound of a '52 Chevy stripping its gears. See also ding.

Suggested Resources

  1. FEEP

    What does FEEP stand for? -- Explore the various meanings for the FEEP acronym on the Abbreviations.com website.

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Numerology

  1. Chaldean Numerology

    The numerical value of feep in Chaldean Numerology is: 8

  2. Pythagorean Numerology

    The numerical value of feep in Pythagorean Numerology is: 5


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"feep." Definitions.net. STANDS4 LLC, 2024. Web. 18 Mar. 2024. <https://www.definitions.net/definition/feep>.

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