Quote of the day
Absence of occupation is not rest,
A mind quite vacant is a mind distressed.
Richard H. Bube

Born: August 10, 1927
Died: June 9, 2018 (aged 90)
Bio: Richard H. Bube was an American scientist.
Known for:
- Electrons in solids (1981)
- Photoelectronic Properties of Semiconductors (1992)
- Photovoltaic Materials (1998)