post.thing.net

headlines | about |

parabolas

categories: | | | |

Other parabolas' types:

parabolas (2)parabolas (2)

http://www.ajg41.clara.co.uk/mirrors/

Sound Mirrors or reflectors were first built in the 1920's as an early warning system that listened for the sound of airplane engines. A concrete bowl shaped reflector focused the sound waves onto a microphone at the focus of the bowl in much the same way that a satellite dish works with radio waves. Many different sizes and types were tried in an attempt to get that vital early warning of attack by enemy planes, but the system was rendered obsolete by the advent of Radar.


parabolas (2)


Morse decoded duo-telegram

leif BRUSH RE: 1- actionables full stop new para
2-Trashed parabolas at curbsides? stop Projections happen http://www.d.umn.edu/~lbrush/blackwholecatalyst.htm stop I've decided on a redoing of sound w/global over the shoulder team-workshops: http://so-on.be/?id=853 and http://earthguest.net/EP.html stop Interactivities http://earthguest.net/LaLlongPLS.htm stop Seeks Internet Student/wherever-you-are contributors full stop new para
Sure, Jerome, a great challenge/contribution to/for sound stop Thanks for bobbing soundmirroring to the top. stop Timely fit for neighbor to neighbor across boundaries cellphones stop Time, Date, Lat. Long. ,tests synced nodes stop For instance, adopting many of global's grounded "ears" as terrain instruments stop That famous and unavailable huge "dish" is 305 m (1000 feet) in diameter, 167 feet deep, and covers an area of about twenty acres. http://www.naic.edu/public/the_telescope.htm-- is really hands-off stop Not these? however, acoustic locators- war-tubas - in Japan stop Four-horn system in First war stop 30-foot high dish and 200 foot wall at Greatstone, Kent stop White Cliffs Underground, Dover stop from your page, Lade, Dungeness stop What's the azimuth and other parameters, etc. stop Significant boost toward cycling-up realtime SOUND/NOISE full stop -0-lb

http://en.wikipedia.org/wiki/Western


User login