本题目来源于试卷: Light: Geometric Optics，类别为 IB物理学
[问答题]
When you look up at an object in air from beneath the surface )z wi.w t4ztg+ z7wx2rxg-e+xin abnc8c ff)i-c /poo)ag+(/ bfgn bz )7dxv0 l.t swimming pool, does the object appear to bb87v ff/ cpdc n0tga+/c)z-gool bnf)b (.ix)e the same size as when you see it directly in air? Explain.
参考答案: When
you are underwater and looking up out of the water at objects above, they all
seem much smaller than they would look directly in air. As Conceptual Example 23-8 says, you would
see the entire outside world compressed into a circle whose edge makes a 49 $^{\circ}\,$
angle with the vertical. This
compression will make objects above the water look smaller than they really
are. See (Fig. Below). 
本题详细解析:
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