Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Calculating the distance of the moon in newton's day

  1. Aug 7, 2011 #1
    my book says that the distance of the moon from the earth was known in newton's time but it doesn't say how they figured it out. it's 380,000 km. does anyone know how they knew it?
     
  2. jcsd
  3. Aug 7, 2011 #2

    SteamKing

    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

  4. Aug 7, 2011 #3
    Wikipedia has http://en.wikipedia.org/wiki/Hipparchus_On_Sizes_and_Distances" [Broken] on the works of Hipparhus in this regard. Presumably measurements had improved somewhat over the intervening centuries (especially after the invention of the telescope and the publishing of Tycho's catalog).
     
    Last edited by a moderator: May 5, 2017
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook