Skip to main content
Scientific American
  • Cart 0
  • Forgot password?Loading
    Not yet registered?
  • |Stay Informed
Advanced Search
  • The Sciences
  • Mind
  • Health
  • Tech
  • Sustainability
  • Education
  • Video
  • Podcasts
  • Blogs
  • Publications
  • Subscribe
  • Current Issue
  • Cart0
  • Sign In
  • Stay Informed
      • Share
      • Latest
      Scientific American August 1940

      An Ideal Experiment

      Taking the Moon's Temperature During an Eclipse Reveals a Phenomenally Big Drop

      • By Henry Norris Russell

      This is a preview. Make a selection below to access this issue.Already have access? Sign in.

      Having trouble accessing this article? Please visit our FAQ page for more information

      More in the August 1940 issue of Scientific American
      • Our Point of View, August 1940
      • What Makes an Aviator?
      • Bleeders, Theelin, and more
      View Full Contents
      Visit our Librarian Gateway for additional information on purchasing a site license to this and other products

      Go from Quantum to Cosmic

      Scientific American Space & Physics is a roundup of the most important stories about the universe and beyond

      Subscribe Now!Go from Quantum to Cosmic

      Follow us

      • instagram
      • soundcloud
      • youtube
      • twitter
      • facebook
      • rss

      Scientific american arabic

      العربية
      • Store
      • About
      • Press Room
      • FAQs
      • Contact Us
      • Site Map
      • Advertise
      • SA Custom Media
      • Terms of Use
      • Privacy Policy
      • Use of Cookies
      • International Editions
      Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www.springernature.com/us). Scientific American maintains a strict policy of editorial independence in reporting developments in science to our readers.

      © 2019 Scientific American, a Division of Springer Nature America, Inc.

      All Rights Reserved.

      Scroll To Top

      You have free articles left.

      Temp Paywall Img

      Support our award-winning coverage of advances in science & technology.

      Already a subscriber? Sign in.

      Subscribers get more award-winning coverage of advances in science & technology.

      See Subscription Options