Figure 12. Negretti and Zambra thermometer, 1874 model. Although the principleof reversing was first described by George Aime' in 1845, this was the firstthermometer to accurately determine the temperature at great depth and return to the surface a
4/5/2019 9:18:46 AM
Photographer: Y. Berard
Credit: Oceanographic Museum of Monaco
Subject: Oceanography
Subject: Historical instruments