By Ian Ridpath

ISBN-10: 0192115960

ISBN-13: 9780192115966

Astronomy is increasing nearly as quickly because the universe itself, and the proliferating medical jargon can occasionally baffle even the main committed beginner. Now, in a few 4,000 concise, up to date entries, this dictionary cuts a transparent direction during the maze of advanced technical language, providing complete, transparent definitions drawn from all facets of astronomy. Compiled by way of Ian Ridpath, a fellow of the Royal Astronomical Society, and a professional group of individuals, A Dictionary of Astronomy includes the newest 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, area missions, and lately named sunlight procedure items exhibit 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 in every single place.

Show description

Read Online or Download A Dictionary of Astronomy PDF

Best astronomy books

Get The Reason Why: The Miracle of Life on Earth PDF

Does one planet actually matter one of the immensity of the Cosmos? John Gribbin is the following to cajole us that it does. during this ground-breaking and provocative new booklet Gribbin argues that we owe our lifestyles to the effect of a 'supercomet' with Venus six hundred million years in the past. yet this can be simply a part of the tale, only one of the astronomical and geophysical explanation why the Earth is targeted.

The Tunguska Mystery (Astronomers' Universe) by Vladimir Rubtsov PDF

The aim of the publication is a twin one: to aspect the character and result of Tunguska investigations within the former USSR and present-day CIS, and to wreck long-standing myths nonetheless held within the West. the 1st issues alleged “final solutions” that experience ostensibly been present in Russia or in different places.

Download PDF by John Archibald Wheeler: Geons, Black Holes, and Quantum Foam: A Life in Physics

The autobiography of 1 of the preeminent figures in twentieth-century physics. He studied with Niels Bohr, taught Richard Feynman, and boned up on relativity together with his buddy and colleague Albert Einstein. John Archibald Wheeler's interesting existence brings us head to head with the imperative characters and discoveries of recent physics.

Exploring Mars by Peggy Parks PDF

Grade 5-7-This drab yet systematic survey bargains scholars an summary of our research of the purple Planet, from old observations of its likely abnormal direction throughout the sky to NASA's April 2004 selection to increase the missions of rovers Spirit and chance. regardless of infrequent and clumsy efforts to rev it up ("After screaming via area at 16 thousand miles in step with hour:"), the prose is as dry because the Martian floor, and several other of the accompanying, faded-looking black-and-white images or diagrams upload neither details nor perception.

Extra info for A Dictionary of Astronomy

Example text

The type star also exhibits X-ray variability. Amor group A group of asteroids that cross the orbit of Mars, but not that of Earth; also known as Earth-approaching (or Earth-grazing) asteroids. 3 AU (the perihelion of Mars). Close approaches to Mars and Earth can turn Amors into Earth-crossers (see APOLLO GROUP) temporarily, and vice versa (see also NEAR-EARTH ASTEROID). The group is named after (1221) Amor, diameter 1 km, discovered in 1932 by the Belgian astronomer Eugène Joseph Delporte (1882–1955).

Away. annealing In optical manufacture, the process of allowing glass or ceramic to cool slowly at a controlled rate, to avoid stress patterns within the material. html (2 of 2) [9/29/2007 7:47:14 PM] Document Page 18 A large mirror blank, for example, is cast from molten material. If cooling is too rapid, temperature variations will arise and some areas will solidify more rapidly than others, creating internal stresses that can cause the mirror blank to shatter when it is being ground to shape.

It uses an array of telescopes to simulate a single telescope of large aperture (see the diagram on p. 22). In principle, an aperture of any size can be synthesized by moving the two elements of an *interferometer to occupy all possible positions in the desired aperture. In practice, all synthesis telescopes make use of the fact that over a period of 12 hours the Earth's rotation will move the elements to sweep out half a ring of the synthesized aperture (supersynthesis, or Earth-rotation synthesis); the other half of the ring can be derived from the observations of the first half.

Download PDF sample

A Dictionary of Astronomy by Ian Ridpath

by Richard

Rated 4.73 of 5 – based on 24 votes