People Germany Johann Leonhard Späth peoplepill id: johann-leonhard-spathJLS 6 views today 17 views this weekGerman mathematician and physicistJohann Leonhard SpäthBiographyBibliography (1)ListsAlso ViewedThe worksBooksSources:Openlibrary1789Photometrische Untersuchung über die DeutlichkeitAuthors:Johann Leonhard SpäthFrom our partnersSponsoredJohann Leonhard Späth