Looking Down a Well: A Brief History of Geodesy
- Visualizations by:
- Chris Smith
- View full credits
Geodesy is a field of study that deals with the measurement and representation of the Earth, and it all started when a clever human named Eratosthenes discovered that you could measure the circumference of the Earth by looking down a well. Over time, the field of geodesy has expanded and evolved dramatically, and NASA uses technology like radio telescopes, ground surveys, and satellites to contribute! Learn more about geodesy in this video!
Credits
Please give credit for this item to:
NASA/Goddard Space Flight Center
Animator
- Chris Smith (KBRwyle) [Lead]
Writer
- Chris Smith (KBRwyle)
Video editor
- Chris Smith (KBRwyle)
Scientists
- Frank Lemoine (NASA/GSFC)
- Herbert Frey (NASA/GSFC)
- Stephen Merkowitz (NASA/GSFC)
Producer
- Chris Smith (KBRwyle)
Narrator
- Steven J. Wall (MUNIZ)
Series
This visualization can be found in the following series:Tapes
This visualization originally appeared on the following tapes:- None
Related pages
Sizing Up Earth
July 9, 2012, 8 p.m.
Read moreLook closely: Earth detection of radio signals from quasars are used to map fine distances and tectonic movements on Earth. With exact coordinates provided by geodesy, scientists can monitor the elevation changes in ice sheets and sea level. For More InformationSee [NASA.gov](http://www.nasa.gov/topics/technology/features/here-pin-down.html)
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