Engineering

Cathode

electronics

Earnshaw, Thomas

English watchmaker

Plaster Of Paris

Uses, & History

Brace and Bit

hand tool

Symington, William

British engineer

McAdam, John Loudon

British inventor

Emission Control System

Components, & Facts

Thermionic Power Converter

electronics

Die

tool

Stevenson, Robert

British engineer

Elevator

vertical transport

Electric Generator

instrument

Nipkow, Paul Gottlieb

Biography & Facts

Rosen, Harold

Biography, Syncom 2, & Facts

Clapboard

construction

Kamen, Dean

Biography, Segway, & Facts