Amtrak stations near Colton: 1  3 miles: SAN BERNADINO (SAN BERNARDINO, 1170 W. 3RD ST.) . 2  7 miles: RIVERSIDE (4066 VINE ST.) - Bus Station 3  . 11 miles: MORENO VALLEY (ARCO MINI MART, 2624 E. ALESSANDRO BLVD.) - Bus Station .
Even when the horse has focused as best it can, its sight is only three-fifths that of a human. In other words, when looking at an object twenty feet away, the horse sees only as much detail as a person with twenty-twenty vision would if the object were thirty-five feet away.
But. h / 5280 is much smaller then 2r, hence 2r + h / 5280 is approximately 2r and thus. Substituting r = 3963 miles give the neat result that if your eyes are h feet above the earth, then the distance to the horizon IN MILES is about. Thus a person 6 feet tall standing on level ground can see for about 3 miles. So, theoretically, a person 6' tall (with binoculars) should be able to see the top of the head of a six-footer who is 6 miles away. He would see the whole person at a distance of 3 miles. Chris.