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Title: Hot water, fresh beer, and salt

Journal Article · · American Journal of Physics; (USA)
DOI:https://doi.org/10.1119/1.16268· OSTI ID:6355882
 [1]
  1. Lawrence Berkeley Laboratory, Berkeley, CA (USA) Physics Department, University of California, Berkeley, CA (USA)

In the hot chocolate effect'' the best musical scales (those with the finest tone quality, largest range, and best tempo) are obtained by adding salt to a glass of hot water supersaturated with air. Good scales can also be obtained by adding salt to a glass of freshly opened beer (supersaturated with CO{sub 2}) provided you first (a) get rid of much of the excess CO{sub 2} so as to produce smaller, hence slower, rising bubbles, and (b) get rid of the head of foam, which damps the standing wave and ruins the tone quality. Finally the old question, Do ionizing particles produce bubbles in fresh beer '' is answered experimentally.

OSTI ID:
6355882
Journal Information:
American Journal of Physics; (USA), Vol. 58:11; ISSN 0002-9505
Country of Publication:
United States
Language:
English