Spin, s, is the rotation of a particle on its axis, as Earth spins on its axis. The spin of a particle is also called intrinsic angular momentum. Angular momentum is momentum (mass times velocity) times the perpendicular lever arm (distance between...

By the early 1920s, scientists had developed a reasonably satisfactory model of the atom. That model required three quantum numbers in order to explain the location and properties of the electrons in an atom. At this point, however, there remained a...

In physics and chemistry, spin is the angular momentum intrinsic to a body, as opposed to orbital angular momentum, which is the motion of its center of mass about an external point. In classical mechanics, the spin angular momentum of a body is...

One of the fundamental questions pondered by physicists is: Where do protons get their spin? Spin is a property of elementary particles as basic as mass and electrical charge. Researchers at the U.S. Department of Energy's Brookhaven National Laboratory (BNL) are using the...

Challenging the foundations of physics, researchers at the renowned Brookhaven National Laboratory said yesterday they had found a possible flaw in the reigning theory of how the universe works. Using a stunningly precise magnetic field and some of the world's most accurate measuring...

 Back in the day when jokes about George Bush were still funny, Michael Moore was well liked by the relatively few fans who followed his career after the cult success of his debut documentary Roger & Me. His incendiary comments about the Bush administration, both...