helicon frequency

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• Helicon — may refer to: *Helicon (crater), lunar impact crater *Helicon (physics), low frequency electromagnetic waves *Helicon (planet), fictional planet in Isaac Asimov s Foundation Series *Helicon thruster, type of ion propulsion engine *Helicon Filter …   Wikipedia

• Helicon (physics) — A helicon is a low frequency electromagnetic wave. Helicons have the special ability to propagate through pure metals, given conditions of low temperature and high magnetic fields. Most electromagnetic waves in a normal conductor are not able to… …   Wikipedia

• Helicon Double Layer Thruster — The Helicon Double Layer Thruster is a prototype spacecraft propulsion engine. It was created by Australian scientist Dr. Christine Charles, based on a technology invented by Professor Rod Boswell, both of the Australian National University.The… …   Wikipedia

• Variable Specific Impulse Magnetoplasma Rocket — Artist s impression of several VASIMR engines propelling a craft through space The Variable Specific Impulse Magnetoplasma Rocket (VASIMR) is an electro magnetic thruster for spacecraft propulsion. It uses radio waves to ionize and heat a… …   Wikipedia

• Toroidal ring model — The toroidal ring model, known originally as the Parson magneton or magnetic electron, is also known as the plasmoid ring, vortex ring, or helicon ring. This physical model treated electrons and protons as elementary particles, and was first… …   Wikipedia

• Vocoder — A vocoder (  /ˈvoʊk …   Wikipedia

• Double layer (plasma) — This article is about the structure in plasma physics. For other uses, see Double layer. Saturnian aurora whose reddish colour is characteristic of ionized hydrogen plasma.[1] Powered by the Saturnian equivalent of (filamentary) Birkeland… …   Wikipedia

• wind instrument — /wind/ a musical instrument sounded by the breath or other air current, as the trumpet, trombone, clarinet, or flute. [1575 85] * * * ▪ music Introduction       any musical instrument that uses air as the primary vibrating medium for the… …   Universalium

• Electrodeless plasma thruster — The electrodeless plasma thruster is a spacecraft propulsion engine. It was created by Mr. Gregory Emsellem based on technology developed by French Atomic Energy Commission scientist Dr Richard Geller and Dr. Terenzio Consoli, for high speed… …   Wikipedia

• Electromagnetic radiation — Electromagnetism Electricity · …   Wikipedia

• plasma — plasmatic /plaz mat ik/, plasmic, adj. /plaz meuh/, n. 1. Anat., Physiol. the liquid part of blood or lymph, as distinguished from the suspended elements. 2. Cell Biol. cytoplasm. 3. whey. 4. a green, faintly translucent chalcedony. 5. Physics. a …   Universalium