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A deer horn, or deer whistle, is a whistle mounted on automobiles intended to help prevent collisions with deer. Air moving through the device produces sound (ultrasound in some models), intended to warn deer of a vehicle's approach. Deer are highly unpredictable, skittish animals whose normal reaction to an unfamiliar sound is to stop, look ...
Picture Animal Description Sound Alligator: bellow, hiss : Alligator bellow: Alpaca: alarm call, cluck/click, hum, orgle, scream [1]: Antelope: snort [2]: Badger ...
Acoustic warning deer horns can be mounted on vehicles to warn deer of approaching automobiles, though their effectiveness is disputed. [58] Ultrasonic wind-driven whistles are often promoted as a cheap, simple way to reduce the chance of wildlife-vehicle collisions.
High-frequency whistles are used on vehicles to drive deer away from highways, and similar devices are used to deter certain types of insects or rodents. Repellents of this kind for domestic cats and dogs include ultrasonic devices which emit a high-frequency noise that does not affect humans.
After the shot, this deer hunter has to still silently speak to calm those shaking nerves. "Now quietly unload the gun, shell-by-shell," the voice says. Slide the action on the receiver. Eject the ...
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 ...
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