Science Source General Science
EN_90286236_0013
![Science Source General Science](img/medium/arch1/dvd0114/35/EN_90286236_0013.jpg)
Strobe photograph of a simple pendulum, showing how gravity accelerates the pendulum bob on the downswing and slows it on the upswing.
2010-02-13
EAST NEWS
Science Source
Berenice Abbott
8j1337
0,35MB
31cm x 23cm by 300dpi
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