Caption: (Left) Three-frame gyroscope and (right) two-frame gyroscope.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 27.49 MB

Caption: Components of a wind turbine
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 40.04 MB

Caption: Four types of gasoline engines: opposed-piston engine, rotary engine, in-line engine, and V-type engine.
Artist: Encyclopaedia Britannica
Release: Not Applicable
File Size: 35.02 MB