TY - JOUR AU - AB - Home Search Collections Journals About Contact us My IOPscience This content has been downloaded from IOPscience. Please scroll down to see the full text. 1914 Trans. Opt. Soc. 15 106 (http://iopscience.iop.org/1475-4878/15/1/305) View the table of contents for this issue, or go to the journal homepage for more Download details: IP Address: 128.119.168.112 This content was downloaded on 08/09/2015 at 07:48 Please note that terms and conditions apply. 106 INSTRUMENTS FOR THE MEASUREMENT OF SOLAR RADIATION. BY MR. ROBERT S. WHIPPLE, M.I.E.E. Read 11th March, 1915. THE measurement of the amount of energy received by the earth froin the sun must always be of interest to mankind. Little excuse, there- fore, need be made for bringing before the Optical Society a short account of the instru- ments nom in general use for this purpose, more especially as very marlred advances have' re- cently been made in the design and construc- tion of apparatus for the measurement of solar radiation. Two factors are of importance :- (1) The intensity of the radiation received from the sun, and (2) The duration of sunshine. The latter factor is the one that appeals to the man in the street, although in reality the former TI - Instruments for the measurement of solar radiation JF - Transactions of the Optical Society DO - 10.1088/1475-4878/15/1/305 DA - 1914-01-01 UR - https://www.deepdyve.com/lp/unpaywall/instruments-for-the-measurement-of-solar-radiation-e4M3U5d5co DP - DeepDyve ER -