Search results
Results from the WOW.Com Content Network
At the UK National Bat Conference, Wildlife Acoustics announced the Echo Meter handheld bat detector. [8] The device will be available in December 2011. The detector is capable of monitoring for bats using heterodyne, frequency division or Real Time Expansion (RTE). RTE is Wildlife Acoustics proprietary technique for shifting bat sounds to the ...
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 ...
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.
Swedish soldiers operating an acoustic locator in 1940. Acoustic location is a method of determining the position of an object or sound source by using sound waves. Location can take place in gases (such as the atmosphere), liquids (such as water), and in solids (such as in the earth).
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
A multibeam echosounder is a device typically used by hydrographic surveyors to determine the depth of water and the nature of the seabed. Most modern systems work by transmitting a broad acoustic fan shaped pulse from a specially designed transducer across the full swathe acrosstrack with a narrow alongtrack then forming multiple receive beams (beamforming) that are much narrower in the ...
This method raised the PM2.5 (particulate matter with a diameter smaller than 2.5 microns) per cubic meter to between 200 and 350. We then ran an air purifier at either maximum or auto setting.
The serotine bat (Eptesicus serotinus), also known as the common serotine bat, big brown bat, or silky bat, [2] is a fairly large Eurasian bat with quite large ears. It has a wingspan of around 37 cm (15 in) and often hunts in woodland. It sometimes roosts in buildings, hanging upside down, in small groups or individually.