Room_in_Which_Mr._Baily_Weighed_the_Earth.jpg


Summary

Description
English: This engraving is of the room where in 1838 Francis Baily measured the density and weight of the Earth. The mean density of Earth was found to be 5.67 times the density of water, and the weight of the Earth was calculated to be 6,049,836 billion tons (give or take).
Date
Source Things Not Generally Known (11th Edition, Lockwood & Co., 1847)
Author John Timbs

Licensing

Public domain

This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer .


This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office ) before January 1, 1929.

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9 October 2014