A former “D” student from Norway, he made his mark at G.E.’s Research Lab in the U.S., in part by confirming a pivotal theory ...

This progress means that, for the first time, complicated astrophysical events like shocks and turbulence can be studied in a ...

An attosecond—or 0.000000000000000001 second—is no time at all for a person. That is not so for electrons, atoms and ...