Wilhelm (Friedrich Philipp) Pfeffer
Wilhelm (Friedrich Philipp) Pfeffer
1845-1920
German botanist who studied osmotic pressure. While working on cell metabolism, Pfeffer developed a semipermeable membrane with which he studied osmosis. In addition to creating a method for measuring osmotic pressure, he proved that osmotic pressure depends on the size of those molecules too large to pass through the membrane. In so doing, he was able to measure the size of giant molecules.
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Wilhelm (Friedrich Philipp) Pfeffer
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Wilhelm (Friedrich Philipp) Pfeffer