It appears that just as our eyes can play tricks on us, so can our ears. This must see video shows some mind-bending examples of how hearing can be a tricky thing.
As music lovers we tend to abuse our ears with headphones, loud events and studio sessions. Now there is a quick online test you can take to check whether your ears are aging quicker than the rest of you.
Did you know that audio frequencies can be used to put out fires? Watch this…
Performers on DARPA’s Instant Fire Suppression program evaluated an acoustic approach to suppressing flames. In this video, a flame is extinguished by an acoustic field generated by speakers on either side of the pool of fuel. Two dynamics are at play in this approach.
First, the acoustic field increases the air velocity. As the velocity goes up, the flame boundary layer, where combustion occurs, thins, making it easier to disrupt the flame. Second, by disturbing the pool surface, the acoustic field leads to higher fuel vaporization, which widens the flame, but also drops the overall flame temperature. As the same amount of heat is spread over a larger area, combustion is disrupted.
NASA has identified a new planet very similar to earth but approximately twice the size outside our solar system that might be able to support life. It’s been named Kepler-22b, after the orbiting telescope aircraft that discovered it, is about two and a half times the size of earth and is 600 light-years away, orbiting a sun-like star.
Brighton-based artist duo Semiconductor, have put together this hypnotic piece of work called 20 Hz which shows the relationship between radio waves and sound. It was co-commissioned by Arts Santa Monica and Lighthouse for the exhibition Invisible Fields which is showing at Arts Santa Monica in Barcelona, Spain through March 4, 2012.
Scientists in Geneva, Switzerland revealed today that they have broken the light barrier. You know what that means…we’re seriously one step closer to time travel!