Get A Dictionary of Astronomy PDF

By Ian Ridpath

ISBN-10: 0192115960

ISBN-13: 9780192115966

Astronomy is increasing virtually as speedily because the universe itself, and the proliferating clinical jargon can occasionally baffle even the main devoted novice. Now, in a few 4,000 concise, up to date entries, this dictionary cuts a transparent direction throughout the maze of advanced technical language, supplying complete, transparent definitions drawn from all elements of astronomy. Compiled by way of Ian Ridpath, a fellow of the Royal Astronomical Society, and a professional crew of members, A Dictionary of Astronomy includes the latest entries from astrophysics and cosmology to galaxies and time.
listed below are succinct definitions for the massive Bang idea, comets, eclipses, Magellanic Clouds, Mars, quasar, relativity, and variable stars. Entries on telescopes and different measuring units, observatories, house missions, and lately named sunlight approach gadgets express how astronomers have explored the universe. The Dictionary additionally presents biographical entries on eminent astronomers from Copernicus to Edwin Hubble.
From black gap to white dwarf, and from spiral galaxies to sunlight waves, A Dictionary of Astronomy opens a window at the universe for newbie astronomers far and wide.

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It is the most complete surviving treatise of ancient astronomy, and contains descriptions of the 48 Greek constellations on which our present-day constellation system is based. Its original Greek title was Syntaxis; Almagest, the name it acquired when translated into Arabic in about AD 820, means 'the greatest'. almanac A publication, usually issued yearly, listing predicted dates and times of forthcoming celestial phenomena and positions of celestial objects, along with other information of interest to astronomers, navigators, and surveyors.

8 with a period of about 5 years. y. away. 4 with an orbital period of about 900 years. The name Antares is Greek, and is usually translated as 'rival of Mars', because of its strong red colour, but sometimes as 'like Mars'. antenna A device used in radio astronomy to detect radio waves; also known as an aerial. In an antenna, radio waves induce an oscillating electric current in a conductor. The simplest antenna is a *dipole antenna, which is a simple metal rod. More complex antennas, such as the *Yagi antenna, may consist of one or more dipoles (the driven element) and other conductors (parasitic elements) which direct or reflect the waves on to the dipole and so increase the antenna's *directivity and *gain.

Ansa. The word is Latin for 'handles', since the rings project from the planet like handles. See also PLANETARY NEBULA. antapex See SOLAR APEX. 5 supergiant 10 000 times more luminous than the Sun and with a probable diameter over 500 times the Sun's. 8 with a period of about 5 years. y. away. 4 with an orbital period of about 900 years. The name Antares is Greek, and is usually translated as 'rival of Mars', because of its strong red colour, but sometimes as 'like Mars'. antenna A device used in radio astronomy to detect radio waves; also known as an aerial.

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A Dictionary of Astronomy by Ian Ridpath


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