Diffusion
Osmosis
Semipermeable membrane
An osmosis experiment
W. Pfeffer Osmotische Untersuchungen 1877. Fig. 1
W. Pfeffer Osmotische Untersuchungen 1877. Fig. 5
depiction of osmotic pressure
schematic drawing of Pfeffer Cell
An example of osmosis: water passing through a semi-permeable membrane to create an isotonic environment