Knocking electrons out of atomic orbit with a laser allows researchers to take femtosecond-scale “movies” of molecules in motion. NIH’s plan to reduce indirect funds faced immense backlash from ...

The shells in which electrons orbit have different quantum numbers ... to train a new generation of physicists. But his atomic model remains the best known work of a very long career.

The ISS orbits Earth at 28,000 km/h, completing a full orbit every 90 minutes. This speed brings astronauts from daylight to darkness roughly every 45 minutes, creating an intense day-night cycle.

Variations in direction of ejection on all sides of the electric force may be accounted for by the initial momentum of the electron in its atomic orbit.