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Vulcan (in astronomy)

Vulcan, in astronomy, hypothetical planet whose existence was proposed by Leverrier to explain part of the advance of the perihelion of Mercury, not all of which could be accounted for by gravitational effects of the other planets under the Newtonian theory of gravitation. The general theory of relativity explains the observed advance of the perihelion of Mercury as being caused by the curvature of space in the vicinity of the sun as a result of the sun's large mass.

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"Vulcan (in astronomy)." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

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"Vulcan (in astronomy)." The Columbia Encyclopedia, 6th ed.. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/vulcan-astronomy

Vulcan

Vulcan (Volcanus) Roman god of fire and volcanoes, identified with the Greek god Hephaestus. His temples were prudently sited outside city walls. Often invoked to avert fires, he was associated with thunderbolts and the Sun.

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"Vulcan." World Encyclopedia. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

"Vulcan." World Encyclopedia. . Encyclopedia.com. (August 22, 2017). http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/vulcan

"Vulcan." World Encyclopedia. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/vulcan

Hephaestus

Hephaestus •cactus • saltus • Diophantus • Sanctus •Rastus, Theophrastusaltostratus, cirrostratus, nimbostratus, stratus •conspectus, prospectus •momentous, portentous •asbestos, Festus •apparatus, Donatus, hiatus, status •acetous, boletus, Cetus, Epictetus, fetus, Miletus, quietus •Hephaestus •Benedictus, ictus, rictus •Quintus • linctus • eucalyptus • cistus •coitus •circuitous, fortuitous, gratuitous •Hippolytus • calamitous • tinnitus •Iapetus • crepitus •precipitous, serendipitous •impetus • emeritus • spiritous •Democritus, Theocritus •Tacitus • necessitous •duplicitous, felicitous, solicitous •covetous •iniquitous, ubiquitous •detritus, Heraclitus, Polyclitus, Titus, Vitus •Pocahontas, PontusPlautus, tortoise •cobaltous •Duns Scotus, lotus •hostess •arbutus, Brutus •Eustace • conductus • cultus •coitus interruptus • Augustus •riotous • Herodotus • Oireachtas

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"Hephaestus." Oxford Dictionary of Rhymes. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

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"Hephaestus." Oxford Dictionary of Rhymes. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/hephaestus-0

Vulcan

Vulcanblacken, bracken, slacken •Sri Lankan •Alaskan, Gascon, Madagascan, Nebraskan •Aachen, darken, hearken, kraken, Marcan, Petrarchan •Interlaken •beckon, Deccan, pekan, reckon •Mencken •awaken, bacon, betaken, forsaken, Jamaican, mistaken, partaken, shaken, taken, waken •godforsaken •archdeacon, beacon, Costa Rican, deacon, Dominican, Mohican, Mozambican, Puerto Rican, weaken •quicken, sicken, stricken, thicken, Wiccan •silken •Incan, Lincoln •brisken, Franciscan •barbican • Rubicon • Gallican •Anglican •Helicon, pelican •basilican, Millikan, silicon •publican • pantechnicon • Copernican •African • American • hurricane •lexicon, Mexican •Corsican • Vatican • liken •Brocken, Moroccan •falcon, Lorcan, Majorcan, Minorcan •Balcon, Balkan •gyrfalcon •awoken, bespoken, betoken, broken, foretoken, oaken, outspoken, plain-spoken, ryokan, spoken, token, woken •heartbroken •Lucan, toucan •Saarbrücken • Buchan • Vulcan •drunken, Duncan, shrunken, sunken •Etruscan, molluscan (US molluskan), Tuscan •Ardnamurchan • lochan

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"Vulcan." Oxford Dictionary of Rhymes. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/vulcan-1