Download Astronomical Observations Made at the Observatory of Cambridge, Vol. 4: For the Year 1831 (Classic Reprint) - George Biddell Airy | PDF Online

Read Astronomical Observations Made at the Observatory of Cambridge, Vol. 4: For the Year 1831 (Classic Reprint) - George Biddell Airy file in PDF

Excerpt from Astronomical Observations Made at the Observatory of Cambridge, Vol. 4: For the Year 1831The focal length of the Transit Instrument with which the following observations were made is nearly 10 feet, ' and its full aperture 5 inches. The power commonly used is about 140. The wires are of silk fibres their thickness is less than 0' - 0 - 0 of an inch, and they

Title : Astronomical Observations Made at the Observatory of Cambridge, Vol. 4: For the Year 1831 (Classic Reprint)
Author : George Biddell Airy
Language : en
Rating :
4.90 out of 5 stars
Type : PDF, ePub, Kindle
Uploaded : Apr 03, 2021

Post Your Comments: