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The proton

July 12th, 2010 · No Comments

The Proton — Smaller Than Thought: Scientists Measure Charge Radius of Hydrogen Nucleus and Stumble Across Physics Mysteries
ScienceDaily (July 12, 2010) — Big problems sometimes come in small packages. The problem with which physicists must now concern themselves measures a mere 0.0350 millionth of a millionth of a millimetre. This is precisely the difference between the new, smaller, dimension of the proton, the nucleus of the hydrogen atom, and the value which has been assumed so far. Instead of 0.8768 femtometres, it measures only 0.8418 femtometres.

Tags: physics

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