Darwin's contemporary Spencer, and Darwin himself, thought this of Lamarck (they disagreed about its truth), and those called Neo-Lamarckians in the late 19th century also held this view and attributed it to Lamarck. Mayr argues it was due to mistranslation of the word besoin to want rather than need.
(Redirected from Audible.com) Audible Inc. is a seller and producer of spoken audio entertainment, information, and educational programming on the Internet. Audible sells digital audiobooks, radio and TV programs, and audio versions of magazines and newspapers. Through its production arm, Audible Studios, Audible has also become the world's largest producer of downloadable audiobooks. On January 31, 2008 Amazon.com announced it would buy Audible for about 300 million USD.
Ultrasounds are sound waves with frequencies higher than the upper audible limit of human hearing. Ultrasound is no different from 'normal' (audible) sound in its physical properties, except in that humans cannot hear it. This limit varies from person to person and is approximately 20 kilohertz (20,000 hertz) in healthy, young adults. Ultrasound devices operate with frequencies from 20 kHz up to several gigahertz. Ultrasound is used in many different fields. Ultrasonic devices are used to detect objects and measure distances. Ultrasound imaging or sonography is often used in medicine. In the nondestructive testing of products and structures, ultrasound is used to detect invisible flaws.