The Swedish physical chemist, Theodor Svedberg

The Swedish physical chemist, Theodor Svedberg

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Credit: SCIENCE PHOTO LIBRARY

Caption: The Swedish physical chemist, Theodor Svedberg, 1884-1971. Svedberg studied at Uppsala and stayed at this university for life. Chiefly interested in the chemistry of colloids (a suspension of large particles) and how best to separate out suspended giant molecules, he developed the ultracentrifuge. Spinning at high speed gives a powerful enough centri-fugal force to affect large molecules and purify out proteins. Svedberg, in this way, cal- culated the relative molecular mass of haemoglobin For this technique and for his other work on colloids, Svedberg was awarded the Nobel Prize for chemistry in 1926. The unit of sedimentation velocity, the svedberg (S), is named after him.

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Keywords: 1926, centrifuge, chemist, chemistry, inventor, nobel laureate, nobel prize, portraits, recipient, surname s, svedberg, t., theodor, winner

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