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bn:03798181n
Noun Concept
PT
pêndulo segundo
EN
A seconds pendulum is a pendulum whose period is precisely two seconds; one second for a swing in one direction and one second for the return swing, a frequency of 0.5 Hz. Wikipedia
Relations
Sources
IS A
pêndulo
HAS KIND
EN
Riefler escapement
Wikipedia Translations
PT
pêndulo segundo

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