London: The Royal Society, 1868. 1st Edition. FIRST EDITION EXTRACTS OF TWO PAPERS, the second a correction of the first, BY GEORGE BIDDELL AIRY (1801-1892). Airy's papers are commentaries on Kirchhoff's conversion of spectral measures into wave-lengths and the first paper also includes nineteen tables of Kirchhoff's measures. The second paper also includes a lithographic chart (full plate). 4to. Both papers in near fine condition.
Airy was an English mathematician and astronomer as well as Lucasian professor at Cambridge and Astronomer Royal. Among “his many achievements include work on planetary orbits, measuring the mean density of the Earth, a method of solution of two-dimensional problems in solid mechanics and, in his role as Astronomer Royal, establishing Greenwich as the location of the prime meridian” (Wikipedia). Airy’s discovery of a new inequality in the motions of Venus and the earth is in some respects his most remarkable achievement. Item #1179