Through a Beer Glass Darkly
DOI: 10.1063/1.881294
Pour yourself a glass of beer and look closely at the rising bubbles. Careful examination shows that they are seldom distributed uniformly throughout the liquid. Instead, streams of bubbles appear to rise from certain spots on the surface of the glass. Closer inspection reveals that the bubbles rapidly grow in size as they ascend, the volume of each bubble often doubling or more by the time it reaches the top of the glass. In addition, the speed of the bubbles increases as they travel upward.
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References
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More about the authors
Neil E. Shafer, Department of chemistry, Stanford University.
Richard N. Zare, Department of chemistry, Stanford University.
