The Way Things Work: An Illustrated Encyclopedia of Technology

action addition alternating angle applied beam brake called camera carbon causes chamber charge circuit closed coil colour compressed comprises connected consists contains continued corresponding cylinder deflection developed device diaphragm direction disc distance drive effect electric electrons energy engine example field flow force frequency function gear glass heat increase iron kind latter layer length lens lever light lines liquid load lower machine magnetic material means mechanism metal mirror mixture motor mounted moves negative object obtained operation particularly passed picture pipe piston plate position pressed pressure principle printing produced propeller pump rays record released result roller rolls rotation screen shaft signal so-called sound speed spring steam surface switch temperature transmitted tube turbine unit usually valve various voltage waves weight wheel wire