منابع مشابه
SPHEEICAL AND PRACTICAL ASTRONOMY. An Introduction to Spherical and Practical Astronomy
Negative characteristics are given throughout for the logarithms of the trigonometric functions, when the corresponding numbers are less than unity. This departure from the usual custom of increasing the logarithms by 10 can hardly be regarded as an improvement. The greatest possible care has been taken to secure the accuracy of the tables ; and in this respect they may be greatly commended. Th...
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متن کاملPopular astronomy.
The Springer-Praxis Popular Astronomy programme covers the latest observations, techniques and discoveries in astronomy, astrophysics and cosmology, selecting key topics designed to fire the imagination of keen astronomers everywhere. Many of the topics selected for titles in this programme are refreshingly new, and away from the accepted mainstream of titles published in this area. Topics inc...
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Pr in te d in th e U SA $4 .9 5 $7 .9 5 C A N LIGHT Wave description: The periodic oscillation of electric and magnetic fields in space. Characterized by the following: 1. Frequency of the oscillation, ν , measured in cycles per second (hertz). 2. Wavelength of the oscillation, λ, measured in meters. This is the distance from one peak to the next. • Wave equation: All light travels at a finite ...
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An enigmatic prediction of Einstein’s general theory of relativity are gravitational waves. With the observed decay in the orbit of the Hulse-Taylor binary pulsar agreeing within a fraction of a percent with the theoretically computed decay from Einstein’s theory the existence of gravitational waves was firmly established. Currently there is a worldwide effort to detect gravitational waves with...
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ژورنال
عنوان ژورنال: The Geographical Journal
سال: 1906
ISSN: 0016-7398
DOI: 10.2307/1776243