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17 April 2014 12:48 pm ,
Vol. 344 ,
Officials last week revealed that the U.S. contribution to ITER could cost $3.9 billion by 2034—roughly four times the...
An experimental hepatitis B drug that looked safe in animal trials tragically killed five of 15 patients in 1993. Now,...
Using the two high-quality genomes that exist for Neandertals and Denisovans, researchers find clues to gene activity...
A new report from the Intergovernmental Panel on Climate Change (IPCC) concludes that humanity has done little to slow...
Astronomers have discovered an Earth-sized planet in the habitable zone of a red dwarf—a star cooler than the sun—500...
Three years ago, Jennifer Francis of Rutgers University proposed that a warming Arctic was altering the behavior of the...
- 17 April 2014 12:48 pm , Vol. 344 , #6181
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Video: The Secret of Tibetan Singing Bowls
30 June 2011 7:00 pm
Buddhists have used the lulling hum of Tibetan singing bowls for thousands of years to begin and end their meditations. Today, physicists are using these same bowls to better understand fluid dynamics. The bronze alloy bowls are standing bells that resonate when struck or rubbed (right). When filled with water, the liquid dances to the vibrations. In a paper published today in Nonlinearity, researchers examined these hydroacoustic properties in four 5th-century singing bowls from the Himalayas. They rigged a speaker to play tones resonant with each individual bowl and then watched how the water responded at different amplitudes. As the amplitude increased, waves formed on the surface, eventually grew chaotic, then crashed into one another, shooting up droplets (top). At certain frequencies and amplitudes, these droplets appear to float and wander across the surface. Though scientists have extensively studied similar dynamics in wine glasses, this is the first study to do so in singing bowls.
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