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They are used as tripod mounted optical enhancement devices for various outdoor activities such as birdwatching, skygazing and other naturalist activities, for hunting and target shooting to verify a marksman's shot placements, for tactical ranging and surveillance, and for any other application that requires higher magnification than ordinary ...
The distance between the two eyes on an adult is almost always 6.5 cm and that is the same distance in shift of an image when viewing with only one eye. [17] Retinal disparity is the separation between objects as seen by the left eye and the right eye and helps to provide depth perception. [ 17 ]
These binoculars, which have been on the market for high-quality compact binoculars for a long time, had the optical parameters 8×20 and 10×25. The "B" designation added to updated models means that there is sufficient eye relief for eyeglasses [Brille in German] wearers. The Trinovid series were supplemented in 2004 by the Ultravid series ...
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 ...
They found that more than 42 per cent of the interactions involved active hunting of the small rodents by ground squirrels. California ground squirrel consuming freshly hunted adult California ...
Much like goshawk, sometimes Cooper's hawks will capture rabbits by pursuing on the ground, half-running, half-flying. [33] Other on-foot hunting efforts, especially when chasing quail, have been detected as well. [7] [62] When hunting sparrows, Cooper's hawks may make multiple passes on a bush before success and the efforts can take up to 45 ...
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