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Tiny bubbles, be gone

By Stephen Ornes / October 1, 2012

Both of these steel balls are superheated to 400 degrees Celsius (750 degrees Fahrenheit). But the one on the left has been treated with chemicals that repel water, and as a result it doesn’t produce the explosion of tiny bubbles that precede a boil, as seen on the right. Credit: Ivan Vakarelski

The right surface can determine how water boils

Posted in Chemistry | Tagged boil, bubbles, chemistry, explosions, getinvolved, Glaco Mirror Coat Zero, King Abdullah University of Science and Technology, materials science, Northeastern University, states of matter, Swinburne University of Technology, University of Melbourne, water repellant, water vapor

No more bubble trouble

By Stephen Ornes / August 6, 2012

Bottlenose dolphins can tell the difference between noisy echoes bounced off of bubbles and other echoes, including those bounced off of prey. Now scientists have figured out a way to tell apart the noises, too. Credit: Emma Jugovich, NOAA

Dolphin’s clicks help scientists sort through confusing underwater noises

Posted in Physics | Tagged acoustics, animals, birds, bubbles, communications, dolphins, echoes, echolocation, engineering, getinvolved, Grant Deane, mammals, mathematics, nonlinear, physics, reptiles, reptiles/birds/mammals, Scripps Institution of Oceanography, sonar, sound, Timothy Leighton, University of Southampton