In the 1950's interest arose in the science-fiction idea of “antigravity”. This concept was a
speculation that matter and antimatter would repel each other in ordinary tensor …

Improvements in our knowledge of the absolute value of the Newtonian gravitational
constant, G, have come very slowly over the years. Most other constants of nature are known …

A precision measurement of the gravitational constant G has been made using a beam
balance. Special attention has been given to determining the calibration, the effect of a …

In this collection of essays Allan Franklin defends the view that science provides us with
knowledge about the world which is based on experimental evidence and on reasoned and …

We have measured the Newtonian gravitational constant using the ocean as an attracting
mass and a research submersible as a platform for gravity measurements. Gravitational …

Stability arguments suggest that the Kaluza-Klein (KK) internal scalar field, $\Phi $, should
be coupled to some external fields. An external bulk real scalar field, $\psi $, minimally …

The gravitational constant G has been determined at two effective interaction distances 88 m
and 112 m, respectively. The 1/r 2 dependence of the Newtonian gravitational force law is …

The Newtonian gravitational constant has been determined at an effective interaction
distance of 112 m. A high-precision balance was used to compare the weights of two 1-kg …

An experimental search for new forces coupling to nuclear isospin with a range of≥ 3 m was
conducted using a torsion balance driven in resonance by a set of masses configured to …

An overview of the experimental and observational status in gravitational physics is given,
both for the known tests of general relativity and Newtonian gravity, but also for the …