There are quite a few fundamental constants. These are things like the speed of light (c) the charge on an electron (e), and the Planck constant (h). These constants are determined with some type of ...

Although gravity seems strong in our everyday lives, such as when lifting a heavy object, it is the weakest of the four fundamental forces. The gravitational force between two bodies is proportional ...

If the universe contains more than three spatial dimensions, as many physicists believe, our current laws of gravity should break down at small distances Nothing seems more certain than the “fact” ...

Physicists have made the first precise measurement of Newton’s universal gravitational constant to use vibrating beams 1. Although the technique is not yet as precise as others, it could eventually ...

Physicist Markus Aspelmeyer vividly remembers the day, nearly a decade ago, that a visitor to his lab declared the gravitational pull of his office chair too weak to measure. Measurable or not, this ...

Even teeny objects obey the law of gravity. A gold ball just 2 millimeters wide, with a mass of about 90 milligrams, is now the smallest object to have its gravitational pull measured. Observations of ...