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  2. Animal echolocation - Wikipedia

    en.wikipedia.org/wiki/Animal_echolocation

    Echolocation, also called bio sonar, is a biological active sonar used by several animal groups, both in the air and underwater. Echolocating animals emit calls and ...

  3. Human echolocation - Wikipedia

    en.wikipedia.org/wiki/Human_echolocation

    Human echolocation is the ability of humans to detect objects in their environment by sensing echoes from those objects, by actively creating sounds: for example, by tapping their canes, lightly stomping their foot, snapping their fingers, or making clicking noises with their mouths.

  4. Echolocation - Wikipedia

    en.wikipedia.org/wiki/Echolocation

    Animal echolocation, non-human animals emitting sound waves and listening to the echo in order to locate objects or navigate. Human echolocation, the use of sound by people to navigate. Sonar (sound navigation and ranging), the use of sound on water or underwater, to navigate or to locate other watercraft, usually by submarines.

  5. Acoustic location - Wikipedia

    en.wikipedia.org/wiki/Acoustic_location

    Animal echolocation, animals emitting sound and listening to the echo in order to locate objects or navigate; Echo sounding, listening to the echo of sound pulses to measure the distance to the bottom of the sea, a special case of sonar; Gunfire locator; Human echolocation, the use of echolocation by blind people; Human bycatch

  6. Melon (cetacean) - Wikipedia

    en.wikipedia.org/wiki/Melon_(cetacean)

    The melon is structurally part of the nasal apparatus and comprises most of the mass tissue between the blowhole and the tip of the snout. The function of the melon is not completely understood, but scientists believe it is a bioacoustic component, providing a means of focusing sounds used in echolocation and creating a similarity between characteristics of its tissue and the surrounding water ...

  7. Ultrasound - Wikipedia

    en.wikipedia.org/wiki/Ultrasound

    Echolocation in bats was discovered by Lazzaro Spallanzani in 1794, when he demonstrated that bats hunted and navigated by inaudible sound, not vision. Francis Galton in 1893 invented the Galton whistle , an adjustable whistle that produced ultrasound, which he used to measure the hearing range of humans and other animals, demonstrating that ...

  8. 'It doesn't make sense': Why millions of children have lost ...

    www.aol.com/doesnt-sense-why-millions-children...

    It’s been five months, and Isabella's parents say she still hasn’t gotten her Medicaid back even though her brother — same family, same income — never lost his.

  9. Marine mammals and sonar - Wikipedia

    en.wikipedia.org/wiki/Marine_mammals_and_sonar

    Some marine animals, such as whales and dolphins, use echolocation or "biosonar" systems to locate predators and prey. It is conjectured that active sonar transmitters could confuse these animals and interfere with basic biological functions such as feeding and mating.