1) Incandescent lamp
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https://www.crosswordclues.com/clue/helion
[chemistry] A helion is a short name for the naked nucleus of helium, a doubly positively charged helium ion. In practice, helion refers to the stable helium-3 nucleus, in opposition to the other stable nucleus helium-4, which is usually referred to as an alpha particle. The (helium-3) helion consists of two protons and one neutron. Accordi...
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http://en.wikipedia.org/wiki/Helion_(chemistry)
[meteoroid] A Helion meteoroid is a meteoroid that arrives from the approximate direction of the Sun. They are thought to originate as debris from sun-grazing comets. ...
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http://en.wikipedia.org/wiki/Helion_(meteoroid)
[publisher] Helion is a Polish publisher. Created in 1991, it is the self-claimed `leading publisher of computer books in Poland.` The long-term development strategy of Helion SA Publishing Group consists in creating brand priority in different segments of the book market and building a community of loyal customers. The Publishing Group ope...
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http://en.wikipedia.org/wiki/Helion_(publisher)
(from the article `celestial mechanics`) ...the focus of the ellipse, the point at which the planet is closest to the Sun is called the perihelion, and the most distant point in the orbit ...
Found on
http://www.britannica.com/eb/a-z/h/33
No exact match found.
