The SciencesThe PyranometerAn Instrument for Measuring Sky RadiationBy C. G. Abbot, L. B. Aldrich on June 8, 1918AdvertisementABOUT THE AUTHOR(S)Recent Articles by C. G. AbbotScience Replies to Secretary Wallace's Article: 'The Scientist in an Unscientific Society'Rotating Projectiles from Smooth-Bore Guns, Smothering a Fire Beneath a Combustible Blanket and moreThe Smithsonian “Solar Constant” Expedition to Calama, ChileRecent Articles by L. B. AldrichThe Pyranometer: An Instrument for Measuring Sky RadiationSolar Radiation