Differential force measurements between spheres coated with either nickel or gold and
rotating disks with periodic distributions of nickel and gold are reported. The rotating …

This book provides the reader with a detailed and captivating account of the story where, for
the first time, physicists ventured into proposing a new force of nature beyond the four known …

Abstract On January 6, 1986, a paper written by our group appeared in Physical Review
Letters entitled “Reanalysis of the Eötvös Experiment”. In that Letter we reanalyzed a well …

An experimental technique has been recently developed to measure forces differentially
between two samples with similar but not identical compositions. The implementation of this …

We consider recent progress in constraining the axion-nucleon coupling constants and the
Yukawa-type corrections to Newtonian gravity from experiments on measuring the Casimir …

Zero-frequency Casimir theory is analyzed from different viewpoints, with the aim of
obtaining further insight into the delicate Drude-plasma issue that turns up when one …

At approximately 11 AM on Monday, January 6, 1986 I received a call from John Noble
Wilford of the New York Times inquiring about a paper of mine which had just been …

We review astrophysical, cosmological and laboratory constraints on different types of axion-
like particles. Special attention is paid to constraints on the axion-nucleon coupling …

Abstract In 1986 Ephraim Fischbach, Sam Aronson, and Carrick Talmadge proposed a
modification of Newton's law of universal gravitation. This modification changed the …