The Sidereal Messenger; A Monthly Review of Astronomy Volume 1

The Sidereal Messenger; A Monthly Review of Astronomy Volume 1

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1882 edition. Excerpt: ...wholly discarding photography, will principally rely upon contact observations at Greenwich and Paris, the Cape of 'Good Hope, the Bermudas, Florida, the West Indies, the Ar gentine Republic, New Zealand and Australia; while the " Germans will measure the desired distances between Venus and the sun's limbs directly with the heliometer at their home observatories, and their temporary stations on the ' Atlantic coast of the United States, at Bahia and on the straits of Magellan. But what can the engineer do with his small transit and level and common watch and without subsidies?. In view of the elaborate and complete arrangements of the astronomers under the auspices of the various governments of the world, any private effort on the part of engineers would indeed seem utterly useless and absurd, yet their brethren oi the 21st century would certainly not forgive them should they neglect so rare an opportunity, de nied to two whole generations after this, to contribute a ' mite to the general fund of the world's knowledge onthis ' interesting occasion. While in the nature of the case all attempts on the part of the engineer, to establish the absolute times of the beginning or end of the transit, or either, at his respective station may be hopeless, he can nevertheless furnish many valuable data for determining effects of refraction and ex plaining attending phenomena, such as the so-called "black ' drop" which in former transits have bothered the astroners so much and rendered their work uncertain, leaving the distance between earth and sun, the great standard unit of all other distances beyond the moon, in doubt by several millions of miles. Those parts of the United States therefore where the more

Product details

  • Paperback | 108 pages
  • 189 x 246 x 6mm | 209g
  • United States
  • English
  • black & white illustrations
  • 123688132X
  • 9781236881328