Read e-book online A History of Astronomy from Thales to Kepler (2nd Edition) PDF

By J. L. E. Dreyer

ISBN-10: 0486600793

ISBN-13: 9780486600796

A masterpiece of old perception and clinical accuracy, this can be the definitive paintings on Greek astronomy and the Copernican Revolution. starting with the traditional Egyptians, it levels from the Pythagoreans and Plato to medieval eu and Islamic cosmologies, concluding with detailed surveys of the works of Copernicus, Brahe, and Kepler.

Formerly titled: heritage of the Planetary platforms from Thales to Kepler

Show description

Read or Download A History of Astronomy from Thales to Kepler (2nd Edition) (Dover Books on Astronomy) PDF

Similar astronomy books

Download PDF by John Gribbin: The Reason Why: The Miracle of Life on Earth

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 e-book Gribbin argues that we owe our life to the influence of a 'supercomet' with Venus six hundred million years in the past. yet this is often in simple terms a part of the tale, only one of the astronomical and geophysical the explanation why the Earth is specified.

Get Astronomy at the Frontiers of Science (Integrated Science & PDF

Astronomy is through nature an interdisciplinary job: it consists of arithmetic, physics, chemistry and biology. Astronomers use (and frequently increase) the newest expertise, the quickest pcs and the main subtle software program. during this publication twenty-two major scientists from 9 nations speak about how astronomy interacts with those different sciences.

Download e-book for kindle: Saturn by Gregory L. Vogt

Offers details recognized approximately Saturn, its jewelry, and moons.

Read e-book online Celestial Mechanics - Volume 2: Part 2: Peturbation Theory PDF

The launching of area cars has given upward thrust to a broadened curiosity within the difficulties of celestial mechanics, and the supply of pcs has made useful the answer of a few of the extra numerically unwieldy of those difficulties. those situations purely extra improve the significance of the looks of Celestial Mechanics, that is being released in 5 volumes.

Extra info for A History of Astronomy from Thales to Kepler (2nd Edition) (Dover Books on Astronomy)

Sample text

It has a large primary objective convex lens (consisting of two or more elements) at one end whereby the light from a celestial body enters and is brought to a focus. This light forms an image at the focal plane that can be magnified and inspected by an eyepiece. The main advantage of this telescope is that it is essentially maintenance-free. So long as the telescope is aligned carefully during manufacture and the lens cell is robust the refractor should remain in good alignment. Refractors also tend to have a large focal length (focal length is the distance from the primary lens to the point where the light is brought into focus, as is shown in Fig.

It is wise to do this preliminary research, as you can find out useful information about eye relief, or what the eyepiece is best suited for. Barlow Lenses A Barlow lens is an extra lens that boosts the magnification. It is fitted between the drawtube and an eyepiece. A common Barlow lens may be a ×2 (though ×3 are becoming increasingly common), and it effectively doubles the magnification of an eyepiece. Barlow lenses are very useful and well worth investing in; if you have three eyepieces and a ×2, then effectively you have six possible choices of magnification.

Starting at position 1, Mercury is behind the Sun and is said to be in superior conjunction. The planet is not visible from Earth during this time. The planet then moves in it’s orbit towards position 2 to start an eastern elongation. During this time, the planet appears to viewers on Earth as a waning gibbous and is visible in the evening sky. As can be seen in the diagram, the planet is coming closer to the Earth, and so it’s apparent size increases. The planet continues in it’s orbit until it reaches Position 3, the point of ‘dichotomy’ At this point it appears to be half illuminated- just like a half moon.

Download PDF sample

A History of Astronomy from Thales to Kepler (2nd Edition) (Dover Books on Astronomy) by J. L. E. Dreyer

by Kevin

Rated 4.86 of 5 – based on 9 votes