How can we reproduce the Greek measurement of the radius of the Earth using modern technology? Dot Physics blogger Rhett Allain walks you through the steps to scientific stardom.

Measurements made on muonic hydrogen give a much more precise value for the proton radius because the muon, which is much heavier than an electron, spends more time very near to – and often within – ...

New measurement yields smaller proton radius Physicists get closer to solving the proton radius puzzle with unique new measurement of the charge radius of the proton Date: November 6, 2019 Source ...

York University researchers have made a precise measurement of the size of the proton -- a crucial step towards solving a mystery that has preoccupied scientists around the world for the past ...

Beyond the point of no return (and back again): Astronomers successfully measure the radius of a black hole Astronomers line three telescopes together to peer into a black hole ...

The proton -- smaller than thought: Scientists measure charge radius of hydrogen nucleus and stumble across physics mysteries Date: July 12, 2010 Source: Max-Planck-Gesellschaft Summary: Big ...