Are the fundamental constants really constant? Recent investigations have shown that one essential fundamental constant -- namely the mass ratio of protons to electrons -- can have changed only by a ...
Physicists have measured and compared the "ticking" rate between three of the most precise clocks in the world to such unprecedented accuracy that it may lay the groundwork to answer some of the ...
The core element of the experiment: a crystal containing thorium atoms. (Courtesy: TU Wien) New high-precision laser spectroscopy measurements on thorium-229 nuclei could shed more light on the fine ...
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