Posts Tagged ‘acoustics’
Nanospheres trap light and hold on longer
STANFORD (US) — Engineers have created photovoltaic nanoshells that harness a peculiar physical phenomenon to better trap light. Continue…
Thursday, February 9, 2012 13:25 - 0 Comments
Health & Medicine - Jan 27, 2012 16:14 - 1 Comment
Medical sensor powered by rap music?
PURDUE (US) — The driving bass rhythm of rap can be used to power a new miniature medical sensor designed to be implanted in the body. (more…)
Science & Technology - Jan 16, 2012 11:19 - 0 Comments
Glider fleet to track fish in real time
CORNELL (US) — A flotilla of solar-powered ocean gliders that can travel up to 12 miles a day may make it possible for scientists to track ocean changes as they happen. (more…)
Top Stories - Aug 21, 2011 17:12 - 1 Comment
Detect sunspots 2 days before flares strike
STANFORD (US) — A new way to detect sunspots as deep as 65,000 kilometers inside the sun can offer up to two days’ advance warning of a solar flare. (more…)
Top Stories - Aug 4, 2011 10:50 - 0 Comments
Boats vs. whales in Cape Cod Bay
PENN STATE (US) — To keep endangered whales from being hit and injured by boats in Cape Cod Bay, researchers are tracking the tiny crustaceans the whales feast on 18 hours a day. (more…)
Science & Technology - Jul 29, 2011 14:27 - 1 Comment
Switch-up may lead to one-way sound
CALTECH (US) — A tunable diode that allows acoustic information to travel in one direction only may bring the concept of a true sound-proof room a step closer to reality. (more…)
Science & Technology - Jun 27, 2011 14:33 - 0 Comments
Sea microphone works like orca ears
STANFORD (US) — Taking a cue from orca whales, scientists have developed a highly-sensitive microphone the size of a pea that can be used underwater at any depth, to hear sounds at any range. (more…)
Science & Technology - Jun 1, 2011 11:31 - 0 Comments
Dual bladder helps toadfish ‘talk’
CORNELL (US) — A swim bladder that is split it two allows the toadfish to be heard above the roar of the underwater crowd. (more…)
Earth & Environment - Sep 13, 2010 13:52 - 0 Comments
Elephants go nocturnal to avoid humans
CORNELL (US)—Dynamite explosions don’t bother elephants, but nearby human activity causes them to dramatically change their behavior. (more…)
Earth & Environment - Jul 8, 2010 11:44 - 0 Comments
Whales shout to be heard in noisy oceans
PENN STATE (US)—North American right whales increase the volume of their calls as ocean noise grows, but it may become too costly to continue to shout, new research shows. (more…)
Science & Technology - Apr 23, 2010 11:12 - 0 Comments
‘Sound bullets’ act like sonic scalpels
CALTECH (US)—Inspired by the popular executive toy Newton’s cradle, researchers have built a device—called a nonlinear acoustic lens—that produces highly focused, high-amplitude acoustic signals dubbed “sound bullets.” (more…)
Science & Technology - Mar 11, 2010 13:32 - 5 Comments
Audibility maps help tune out office buzz
CARDIFF U. (UK)—Sound-mapping software based on human hearing could take the overhead noise out of open office and meeting spaces. (more…)
Science & Technology - Dec 3, 2009 12:21 - 0 Comments
Human speech is music to our ears
DUKE (US)—Humans may love music, biologically speaking, because it mimics the sounds of our own voices. Neuroscientists say the use of 12 tone intervals in the music of many human cultures is rooted in the physics of how our vocal anatomy produces speech and conveys emotion. (more…)
Science & Technology - Sep 1, 2009 6:00 - 2 Comments
Tiny tweezers snag living cells
While optical tweezers are large and expensive, acoustic tweezers are smaller than a dime, small enough to fabricate on a chip using standard chip manufacturing techniques. They can also manipulate live cells without damaging or killing them. Above, the interdigital transducers (yellow) emit surface acoustic waves that push particles into position. (Credit: Tony Jun Huang and Jinjie Shi/Penn State)
Earth & Environment - Jul 24, 2009 14:43 - 0 Comments
Noisy nests not for the birds
“Understanding how birds respond to noise, especially birds with critical links to ecosystems, are crucial in maintaining biodiversity in growing areas of landscapes disturbed by urban clamor,” says lead author Clinton Francis. (Western Tanager pictured above. Courtesy: Clinton Francis)
