The thickness of lead’s neutron ‘skin’ has been precisely measured The atom’s nucleus is surrounded by a neutron shell just 0.28 trillionths of a millimeter thick ...

Sington, a veteran of more than two dozen science documentaries, believes there are some simple rules for making any movie, even one that takes on high-level science. Here's his recipe: ...

Now, physicists have made a new, more precise bottle measurement of the neutron’s lifetime, pegging it at 877.7 seconds, or around 14.6 minutes, a team reports online May 6 in Science.

There most probably is a neutron, smallest bit, last resolvable particle of Matter. Last Summer when Dr. W. Pauli of Zurich propounded the idea at Pasadena, the fact was less certain (TIME, June ...