Fibre Optics, 1955. Inventor : Narinder Kapany, England.

Film (musical), 1923. Inventor: Dr. Lee de Forest (USA) New York demonstration (March 13).

Film (talking), 1926. Inventor: Warner Bros. (USA). First release Don Juan, Warner Theatre, New York (August 5).

Fluorine, 1886. Inventor: Henri Moissan (France).

Fountain Pen, 1884. Inventor: Lewis E. Waterman (USA) (1837-1901). Patented by D. Hyde (USA), 1830, undeveloped.

Frozen Food, 1924. Inventor: Clarence Birdseye, USA.

Gas Lighting, 1792. Inventor: William Murdock (Scotland), (1754- 1839). Private house in Cornwall, 1792; Factory, Birmingham, 1798; London Street, 1807.

Generator, 1860. Inventor: Piciontti (Italian). Continuous current: improved by Gramme (Belgium). 1870.

Glass (stained), c. 1080. Inventor: Augsberg (Germany). Earliest English, c. 1170, York Minister.

Glassware, c. 1500 BC. Inventor: Egypt and Mesopotamia. Glass blowing, Syria, c. 50 BC.

Glider, 1853. Inventor: Sir George Cayley (England) (1773-1857). Near Brompton Hall, Yorkshire, England. Passenger possibly John Appleby.

Gramophone, 1878. Inventor : Thomas Edison (USA).

Gyro-Compass, 1911. Inventor: Elmer A. Sperry (USA) (1860-1930). Tested on USS Delaware (August 28). Gyroscope devised 1882 by Foucault (France).