the National Aeronautics and Space Administration
This NASA site contains information about constructing a miniature drop tower to investigate the effects of free fall. The tower incorporates a video camera mounted on the falling platform. The site provides construction suggestions, several suggested experiments, and background information.
<a href="http://www.compadre.org/informal/items/detail.cfm?ID=4525">National Aeronautics and Space Administration. Reduced Gravity Demonstrator. Washington: National Aeronautics and Space Administration.</a>
National Aeronautics and Space Administration. Reduced Gravity Demonstrator. Washington: National Aeronautics and Space Administration. https://spaceflightsystems.grc.nasa.gov/mini/minit.htm (accessed 10 December 2016).
%0 Electronic Source %T Reduced Gravity Demonstrator %I National Aeronautics and Space Administration %V 2016 %N 10 December 2016 %9 text/html %U https://spaceflightsystems.grc.nasa.gov/mini/minit.htm
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