- Famed author and lecturer Charles Eastman (Ohiyesa) was raised in a traditional Dakota manner until age fifteen, when he entered Euro-American culture at his father’s request. He spent the rest of his life moving between Native American and settler-colonist worlds, achieving renown but never financial security.
- Elementary charge (Wikipedia)
The elementary charge, usually denoted by e, is the magnitude of the charge on an electron and a fundamental physical constant defined to be exactly e = 1.602176634×10−19 C. The elementary charge is a measure of the coupling strength of the electromagnetic force and one of the seven defining constants of the International System of Units (SI).: 124