When currents in wires run parallel, the wires attract due to the magnetic fields from the currents and the Lorentz force. The currents can also be run anti-parallel, making the wires repel. Place the ...

Ampère was playing with wires when he discovered a fundamental law of electromagnetism. Hans Christian Oersted had just discovered the connection between electricity and magnetism. Meanwhile, a French ...

The ability to work-out the Casimir force between arbitrarily-shaped objects could be one step closer thanks to work done by physicists in the US. The team used an atomic force microscope to measure ...

The attractive force between two surfaces in a vacuum - first predicted by Hendrik Casimir over 50 years ago - could affect everything from micromachines to unified theories of nature. What happens if ...