Piaget biography pdf

Pettersson Piaget A common standard for measurements and reliable instruments were important factors in Pettersson’s contributions to establishing the field of oceanography. He himself was a competent inventor of instruments and constructed in the s an insulated water bottle and a current meter.

This sampler was used by Nansen during his Fram expedition (–); after the return Nansen suggested improvements to Pettersson, the most important being to mount a thermometer into the water bottle.

Piaget biography pdf

V. W. Ekman at ICES’s Central Laboratory around constructed a current meter and a new reversing water bottle, devices that were superior to Pettersson’s constructions. Pettersson pursued several lines in his research. After he concentrated on tidal movements in the deeper water layers and the relationship between oceanographic and meteorological phenomena.

Pettersson was considered an esteemed chemist and researcher even though some of the late publications contained hypotheses that h