WhakamĀrama Āpitihanga
E pēnei ana te mahi a te pūrere pāorooro:
He ngaru oro ikeike, tē rangona e te taringa tangata, kei tua atu i te 20,000Hz te auau. Whakamahia ai he pūrere pāorooro hei whakaputa ngaru oro ikeike, hei kimi i tētahi mea e noho ana ki te takere o te moana. Ka whakaatangia te ngaru, ā, ka hopukina anōtia e te pūrere pāorooro, ā, mā konei e tātaihia ai te tawhiti o te mea nāna i whakaata te ngaru, me tōna wāhi noho.
An ultrasound wave with a frequency above 20,000Hz which cannot be heard by the human ear. A sonar device is used to send out ultrasound waves in order to locate objects on the sea floor. The wave is reflected off the object and is caught again by the sonar device, allowing the distance and position of the object to be calculated.
pāorooro - resounding
Pēhea nei te auau o ngā ngaru pāorooro?
Rangahautia te whakamahinga o te pūrere pāorooro i roto i te umanga hī ika.
He mea whakaputa tuatahi te pūrere pāorooro i te tau 1920.