
4 0 c m
35cm
actual image size: 27cm x 32cm
Description
Plate taken from 'Soap Bubbles' (1912) by Charles Vernon Boys, demonstrating that a jet of water is 'a machine for magnifying sound'. The 'Water telephone' was one of a great number of experiments devised by Chichester Bell, cousin of telephony pioneer Alexander Graham Bell. Charles Vernon Boys (1855-1944), English physicist, designed a calorimeter for determining the calorific value of coal gas. He was President of the Physical Society in the period 1916-1918.
Image Details
Image Ref.
10322454
© Science Museum / Science & Society Picture Library