Demonstration of piezo electricity.
Pedestal grand demonstration model
1921
Demonstration of aeolian tones
1964
Component of demonstration of aeolian tones
1964
Demonstration Wheatstone bridge
1866-1896
Demonstration of Lissajous figures
1963
Centre of gravity demonstation `The Acrobatic Equilibrist'
1800-1900
Four stages in the manufacture of a plastic haptic lens
1980-1982
A demonstration litre
1900
reproduction of sound from sound film
1949
Demonstration steam engines
Centrifugal force demonstration
Working demonstration from the Computing Gallery
Demonstration Bramah morticed deadlock and key, 1972
Demonstration of aeolian tones
1964
Working demonstration of reed-relay operation
Electrostatic demonstration apparatus
1850-1875