San Antonio – There are only six Foucault pendulums in Texas and one is at a middle school in San Antonio. Usually reserved for museums and universities, David “Tex” Hill Middle School has a Foucault ...
PENDULUM SEISMOMETERS are among the oldest forms of instruments employed to record earthquake motion upon a stationary plate. In 1841 crude forms of such seismometers were used to record shocks at ...
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