Search results
Results from the WOW.Com Content Network
Acoustic harassment and acoustic deterrents are technologies used to keep animals [1] and in some cases humans away from an area. Applications of the technology are used to keep marine mammals away from aquaculture facilities and to keep birds away from certain areas (for instance in the vicinity of airports and blueberry fields).
Ultrasonic scarers are not harmful to birds, however, there is debate around birds' ability to hear these frequencies at loud enough decibels. Birds are believed to have similar hearing to humans, with studies showing birds do not hear on an ultrasonic level, [ 9 ] meaning that ultrasonic scarers often have little or no effect in deterring birds.
Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.
There are also ultrasonic avian deterrents, which are inaudible to human ears. [2] Ultrasonic bird repeller, 2008. In 2013, Dr. John Swaddle and Dr. Mark Hinders at the College of William and Mary created a new method of deterring birds and other animals using benign sounds projected by conventional and directional (parametric) speakers. [8]
A statistical survey into customer satisfaction levels with ultrasonic deterrents concluded that 80% of owners expressed satisfaction with the results of ultrasonic deterrent devices. [ 3 ] The Royal Society for the Protection of Birds (RSPB), has endorsed a commercial product called "CatWATCH", [ 4 ] for which it receives 2% of the wholesale ...
The term echolocation was coined by 1944 by the American zoologist Donald Griffin, who, with Robert Galambos, first demonstrated the phenomenon in bats. [1] [2] As Griffin described in his book, [3] the 18th century Italian scientist Lazzaro Spallanzani had, by means of a series of elaborate experiments, concluded that when bats fly at night, they rely on some sense besides vision, but he did ...
French Lick, Indiana is Larry Bird's hometown. The city has plenty of Bird-related travel attractions.
Ultrasound can also provide additional information such as the depth of flaws in a welded joint. Ultrasonic inspection has progressed from manual methods to computerized systems that automate much of the process. An ultrasonic test of a joint can identify the existence of flaws, measure their size, and identify their location.