News tagged with repulsion

Metal surface can repel electric charges

(Phys.org)—Metals are known for being good electrical conductors. Due to this property, a stationary electric point charge placed outside a metal will cause the electrons in the metal to redistribute in ...

Jan 08, 2013 feature
4.4 / 5 (12) 1 | with audio podcast

Dark energy is real, say astronomers

(Phys.org)—Dark energy, a mysterious substance thought to be speeding up the expansion of the Universe is really there, according to a team of astronomers at the University of Portsmouth and LMU University ...

Sep 12, 2012
4.3 / 5 (42) 144 | with audio podcast

New project aims for fusion ignition

Russia and Italy have entered into an agreement to build a new fusion reactor outside Moscow that could become the first such reactor to achieve ignition, the point where a fusion reaction becomes self-sustaining ...

May 10, 2010
4.9 / 5 (45) 22 | with audio podcast

Magnetism observed in gas for the first time

(PhysOrg.com) -- For the first time, MIT scientists have observed ferromagnetism in an atomic gas, addressing the decades-old question of whether gases could show properties similar to a magnet made of iron or nickel. Specifically, ...

Sep 17, 2009
4.5 / 5 (14) 0

A Theory of Dark Matter

Among the most astounding, unexpected, and important achievements of the past century (or even more) have been the discoveries of dark matter and dark energy, collectively dubbed the "dark sector."

Sep 08, 2009
3.6 / 5 (45) 56