Figure 59. Insulated Knudsen bottle with frame. Martin Knudsen designed this apparatus about 1921 with the aid of Hans J. Nielsen. This bottle had a large aperture which facilitated the circulation of the water into the bottle. Note the messenger on the ascending mode image. Left: descending. Right: ascending.
Photo Category: Oceanography - Historical instruments
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| Added On | 18th October 2015 |
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