invariable pendulum
noun1
A pendulum for carrying from station to station to be oscillated at each, so as to fix the relative acceleration of gravity.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun
A pendulum for carrying from station to station to be oscillated at each, so as to fix the relative acceleration of gravity.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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