Physics, 27.06.2019 21:50 ilovejustinbieber42

The crested goshawk is an amazing predator, as i learned from watching the smithsonian channel. like most raptors, it performs aerial reconnaissance and attacks small animals. the show claimed the goshawk could spot its prey up to a few miles away. which got me how big is its prey? ? assume the goshawk’s pupil has a diameter of 7.00 mm, that it sees light of wavelength 450 nm and that the prey is 5.00 km away (about 3 miles). what is the size of the smallest animal it can possibly see? (for comparison, the goshawk is about 18 inches, or 40 cm, tall.)

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