His chosen field was physics, and in addition he did much original research and was greatly distinguished as a scientist.

His chief contribution to science was his studies of the electron and his monumental work on the "Identification of Matter and Energy," wherein he established, beyond cavil and for all time, that the ultimate unit of matter and the ultimate unit of force were identical.

This idea had been earlier advanced, but not demonstrated, by Sir Oliver Lodge and other students in the new field of radio-activity.
In the first place, his clothes did not fit him.

He wore a ready-made suit of dark cloth that was ill adjusted to his body.

In fact, no ready-made suit of clothes ever could fit his body.