ArticlesScientific Apparatus and Laboratory Methods

A SIMPLE RELIABLE TIME CLOCK

See allHide authors and affiliations

Science  17 May 1935:
Vol. 81, Issue 2107, pp. 491-492
DOI: 10.1126/science.81.2107.491-a

This is a PDF-only article. The first page of the PDF of this article appears below.

PDF extract preview