. Echoes of bats and men. Sound-waves; Echolocation (Physiology); Orientation. AIRBORNE ECHOES scope screen with a camera in which the fihn moves at a constant rate. While the spot moves up and down as the sound waves strike the microphone, the motion of the fihn draws a graph of sound pressure on the vertical axis against time on the horizontal axis. The resulting graphic picture of sound waves makes it easy to see the echoes which continue to arrive at the microphone a. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability
. Echoes of bats and men. Sound-waves; Echolocation (Physiology); Orientation. AIRBORNE ECHOES scope screen with a camera in which the fihn moves at a constant rate. While the spot moves up and down as the sound waves strike the microphone, the motion of the fihn draws a graph of sound pressure on the vertical axis against time on the horizontal axis. The resulting graphic picture of sound waves makes it easy to see the echoes which continue to arrive at the microphone a. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Griffin, Donald R. (Donald Redfield), 1915-. Garden City, N. Y. : Anchor Books
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Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodivers, booksubjectorientation
