File:Schuster potential matter 2a.png

Scan of page 1 of "Potential Matter", by Arthur Schuster, Nature, 27 October 1898, pp618-619. This article is relevant to Wikipedia due to its role in the history of the concepts of antimatter and negative mass. Freely available scans do not appear to exist elsewhere online.

Under Copyright law of the United Kingdom, the article depicted is in the public domain, as Schuster died in 1934 (more than 70 years ago). Under United States copyright law, it is in the public domain, as it was published before 1923.