Results for "Guide to the Smithsonian Archives (Monograph : 1978)"

Now You See It, Now You Don't - The Foucault Pendulum at the National Museum of American History

• Date: November 8, 2018
• Creator: Mitch Toda
• Description: In honor of the anniversary of the discovery of x-rays, a look inside the Foucault pendulum that used to hang at the National Museum of American History.