Home›Browse›seconds pendulum🌐EnglishEnglishDeutschEspañolPolskiРусскийहिन्दी中文日本語EntityQ354669· pop 9· linked from 62 articlesseconds pendulumSign in to savependulum whose period is precisely two secondsAvailable in 9 languagesEspañolDeutsch中文Русскийहिन्दीCatalanNorwegian NynorskUkrainianvia Wikidata sitelinks · CC0