Digital Library Search
Description
Figure 59. Insulated Knudsen bottle with frame. Martin Knudsen designed thisapparatus about 1921 with the aid of Hans J. Nielsen. This bottle had a largeaperture which facilitated the circulation of the water into the bottle. Notethe messenger on the ascending mode image. Left: descending. Right:ascending. (Image credit: Oceanographic Museum of Monaco | Y. Berard)