|Series||Smithsonian miscellaneous collections,, v. 111, no. 14, Smithsonian miscellaneous collections ;, v. 111, no. 14.|
|LC Classifications||Q11 .S7 vol. 111, no. 14|
|The Physical Object|
|Number of Pages||11|
|LC Control Number||50060013|
The Abbot silver-disk pyrheliometer – Loyal Blaine Aldrich – Google Books Add a review and share your thoughts with other readers. These instruments have the advantage of being entirely spring driven and thus require no electrical energy. Get this from a library! The silver disk pyrheliometer, with one plate. [C G Abbot]. BY DAVID H. DEVORKIN. CHARLES GREELEY ABBOT was the second director of the Smithsonian Astrophysical Observatory and the fifth Secretary of the Smithsonian Institution. He was the second and last person to hold both posts simultaneously and is remembered today for his skill as an instrumentalist and his unshakable belief that the Sun is a variable star and that its variations had a measurable. An instrument used for the measurement of direct solar radiation; it consists of a silver disk located at the lower end of a diaphragmed tube which serves as the radiation receiver for a calorimeter; radiation falling on the silver disk is periodically intercepted by means of a shutter located in the tube, causing temperature fluctuations of the calorimeter which are proportional to the.
Loyal Blaine Aldrich (Novem – Febru ) was an American astrophysicist and astronomer of the Smithsonian graduation from the University of Wisconsin in , Aldrich became a Smithsonian Astrophysical Observatory assistant to Charles Greeley observatory conducted astrophysical research on solar radiation and the amount of energy from the Alma mater: University of Wisconsin. An Abbot silver-disk pyrheliometer was placed on the platform outside the observatory tunnel to measure the solar irradiance. The instrument was on an equatorial mount, so that the sun could be followed by adjusting a single screw. Exposures needed to be accurately timed, for which purpose a pendulum beating half seconds was used. Abbot, C.G. (Charles Greeley), On the corrections to be applied to silver-disk pyrheliometry. City of Washington: Smithsonian Institution, (OCoLC) Material Type: Government publication, National government publication, Internet resource: Document Type: Book, Internet Resource: All Authors / Contributors. affect the utility of the pyrheliometer even for purposes of studying secular change in the solar radiation. Thus, it is of great advantage to be able to compare such an instrument from time to time with one like the Abbot " Silver Disk " pyrheliometer, which is presumed to be free, from variable errors. § 3. THE ABBOT PYRHELIOMETER.