Invisible helium atoms provide exquisitely sensitive test of fundamental theory - Phys.org

Physicists at the Australian National University have developed the most sensitive method ever for measuring the potential energy of an atom (within a hundredth of a decillionth of a joule—or 10-35 joule), and used it to validate one of the most tested theori…

Physicists at the Australian National University have developed the most sensitive method ever for measuring the potential energy of an atom (within a hundredth of a decillionth of a jouleor 10-35 jo… [+4389 chars]

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