Acoustics: Shattering glass with sound

I really enjoy Make Magazine (USA) for their many contributions to open source hardware development, but that is not the subject of this post. Instead, I'd like to point you to an excellent video they have up on their site from the MIT Department of Physics on breaking a wine glass with sound.

Law Enforcement: LRAD used for crowd control

The LRAD (Long Range Acoustic Device) was used for crowd control during a G-20 meeting in Pittsburg, USA in September 2009, according to this report.  For background on LRAD, see my previous post.

Human Auditory System: Learn echolocation

I came across (yet) another article on learning echolocation, this time by Wired (USA, popular technology magazine).  It is worth a read, if only for the observations, such as getting dry mouth from clicking too much.

For the record, I posted about this topic before to refute the contention that humans are learning to do this for the first time.