Donnerstag, 27. Dezember 2012

Zum Lesen

über die Feiertage


The Bats of Britain & Ireland
Echolocation Calls, Sound Analysis, and Species Identification
Jon Russ
Sound is a form of energy, which travels through a medium such as a solid, liquid or a
gas. It is produced when the medium is disturbed in some way by a vibrating object such
as speaker cone on a hi-fi system. As the cone moves forward, the air immediately in front
is compressed, causing a slight increase in air pressure.....


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