Lecture on the Pendulum-Experiments at Harton Pit

Catalogue no: 1505
Dewey No: Subject(s): Courtenay Ilbert Archive
Author(s): George Biddell Airy
Total pages: 30 Illustrations: 2 Language(s): English Publication date: 1855
Editor: Publisher: G.B.Airy
Dimensions: 220mm x 145mm Condition: Good, some pages uncut
Related titles: Related library records:

Full title on front cover as follows;

Lecture on the Pendulum-Experimants at Harton Pit, Delivered in the Central hall, South Shields, October 24th, 1854, by George Biddell Airy Esq., Astronomer Royal, Together with A Letter Containing The Results Of The Experiments.

The subject of this lecture is best described in the introduction;

"The experiments with this instrument, (pendulum), at Harton Pit, by the Astronomer Royal, were of a different nature from those made by Kater, Sabine, Foster, and others.  The former were intended to discover the exact number of vibrations of the invariable pendulum upon the surface, and at the lowest ascertainable depth below it.  The latter to ascertain the actual length of the seconds pendulum, or the number of vibrations at different places of the Earth's surface.  One to discover the absolute density of the earth; the other its form, and the relative position of its parts."

Of the two illustrations, one shows Harton Pit at the surface, the other the clock and pendulum experiment set up deep in the pit.

Room location: Library Extension Cabinet: F Shelf: 5
Search terms: Pendulums
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