Traditional Culture Encyclopedia - Photography major - (20 13? As shown in the picture, the photo was taken at night by a photographer with continuous exposure technology, and the arc in the photo is the apparent motion trajectory of the star.
(20 13? As shown in the picture, the photo was taken at night by a photographer with continuous exposure technology, and the arc in the photo is the apparent motion trajectory of the star.
Taking a distant star as a reference, the earth rotates 360 once, which takes 23: 56 minutes and 4 seconds, that is, about 24 hours, that is, the angular velocity of the earth's rotation is 15/ 1 hour (except for the poles), the apparent motion of star A is about 50, and the shooting time is more than 3 hours. C fits the question.
So choose: C.
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