“There is nothing noble in being superior to some other man. The true nobility is in being superior to your previous self.” Probably W.L. Sheldon, US lecturer on ethics (1858 – 1907) rather than Ernest Hemingway.
Tuesday, 5 November 2013
Whistle while you work
Computational fluid dynamics was never my forte but I make a mean cup of tea. A
team at the University of Cambridge have addressed an issue that
thwarted acoustic scientists for years, namely how does a kettle whistle?
Apparently the answer lies in pressure pulses that form steam vortices that
produce sound. I wonder Oolong the research took?