Go back to article: Writing sound with a human ear: reconstructing Bell and Blake’s 1874 ear phonautograph

Figure 7

Colour photograph of a glass plate smoked with soot from a candle flame installed on top of the glass bed of the brass stage

© Denis Larouche

Completed moving glass apparatus with pulley wheel, installed onto the microscope structure

DOI: http://dx.doi.org/10.15180/191206/010