Displaying 61 - 70 of 2009
Image
“Helmholtz Resonators By Rudolph Koenig”. n.d. Cleveland, OH: Case Western Reserve University.
Object, Instrument, Technology

See also Tonometer

Picture: Max Planck Institute for the History of Science

Object, Instrument, Technology

Date of production: 1950s

Image
“Brüel & Kjær 2304 Level Recorder (1)”. n.d.
Image
“Brüel & Kjær 2304 Level Recorder (2)”. n.d.
Person

Picture: CC0 | Wikimedia

1832
1920
Image
“Vacuum Tube Mixing Console (1)”. n.d.
Image
“Vacuum Tube Mixing Console (2)”. n.d.