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Galton whistle, the first "dog whistle" A dog whistle (also known as silent whistle or Galton's whistle ) is a type of whistle that emits sound in the ultrasonic range, which humans cannot hear but some other animals can, including dogs and domestic cats , and is used in their training .
A trailing edge tone occurs when an exterior flow passes over a trailing edge. There is a whistle that is a combination of an edge tone and a trailing-edge tone and might be called a wake-edge tone. It occurs in rotating circular saws under idling conditions and may be called the circular-saw whistle. Under load conditions, blade vibration ...
The hearing ability of a dog is dependent on breed and age, though the range of hearing is usually around 67 Hz to 45 kHz. [22] [23] As with humans, some dog breeds' hearing ranges narrow with age, [24] such as the German shepherd and miniature poodle. When dogs hear a sound, they will move their ears towards it in order to maximize reception.
Image credits: Laura Gustafson #5. We had a couch in the living room. But the living room was carpeted so I was not allowed to walk on the carpet. And thus I was not allowed to sit on the couch.
At a time when the Republican Party is struggling to gain the support of minority voters, their first debate featured a chorus of dog whistles on issues of race.. In response to a question about ...
Dogs are able to hear ultrasound, which is the principle of 'silent' dog whistles. Snakes sense infrasound through their jaws, and baleen whales, giraffes, dolphins and elephants use it for communication. Some fish have the ability to hear more sensitively due to a well-developed, bony connection between the ear and their swim bladder.
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