ArticlesSpecial Article THE MOTION OF A GRAVITATING NEEDLE By Carl Barus See allHide authors and affiliations Science 29 Aug 1919:Vol. 50, Issue 1287, pp. 214-216DOI: 10.1126/science.50.1287.214 Carl Barus Find this author on Google Scholar Find this author on PubMed Search for this author on this site Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears above.