Vant-Hull, Lorin2022-09-192022-09-19197519752342805https://hdl.handle.net/10657/11413The fraction of the intensity measured by a currently manufactured Eppley Normal Incidence Pyrheliometer (N.I.P.), within three annular regions of the solar aureole, has been determined during eight days. This fraction was determined by measuring the adjusted voltage difference between the N.I.P. and a modified N.I.P., divided by a corrected output voltage of the N.I.P. The fraction of intensity within the aureole was generally found to have little effect on the intensity measured by the N.I.P., even on hazy days. The data taken indicates a linear relationship between the fraction of the direct beam intensity scattered into the aureole and the total extinction coefficient of the atmosphere.application/pdfenThis item is protected by copyright but is made available here under a claim of fair use (17 U.S.C. Section 107) for non-profit research and educational purposes. Users of this work assume the responsibility for determining copyright status prior to reusing, publishing, or reproducing this item for purposes other than what is allowed by fair use or other copyright exemptions. Any reuse of this item in excess of fair use or other copyright exemptions requires express permission of the copyright holder.Thesisreformatted digital