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Researchers have been hot on the trail of the elusive Denisovans, a type of ancient human known only by their DNA and...
Thousands of scientists in the Russian Academy of Sciences (RAS) are about to lose their jobs as a result of the...
Dyslexia, a learning disability that hinders reading, hasn't been associated with deficits in vision, hearing, or...
Exotic, elusive, and dangerous, snakes have fascinated humankind for millennia. They can be hard to find, yet their...
Researchers have sequenced and analyzed the first two snake genomes, which represent two evolutionary extremes. The...
Snake venoms are remarkably complex mixtures that can stun or kill prey within minutes. But more and more researchers...
At age 30, Dutch biologist Freek Vonk has built up a respectable career as a snake scientist. But in his home country,...
Since arriving on the island of Guam in the 1940s, the brown tree snake ( Boiga irregularis ) has extirpated native...
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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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