Home›1923 in science›Wood-Anderson torsion seismometer🌐EnglishEnglishFrançaisPortuguêsفارسی한국어日本語EntityQ25429888· pop 6· linked from 8 articlesWood-Anderson torsion seismometerAlso known as Wood–Anderson torsion seismograph, Wood-Andersonov seismographseismometer developed by Harry Oscar Wood & John August AndersonAvailable in 6 languagesPortuguêsCroatianHebrewفارسی한국어via Wikidata sitelinks · CC0ConnectionsRichter scaleEntityCharles Francis RichterEntityCategories1923 in science1923 introductionsAmerican inventionsSeismology instruments