本题目来源于试卷: Optical Instruments，类别为 IB物理学
[问答题]
In attempting to discer9ipe 8a/ ukab. hf 5g*bd16 0i:ma(aqgb zww,pn di1g qfh vmow*s-u 9zd.ggk-f*, stant details, people will sometimes squint. Why does toq-df -kuf .*zwg 9v1hgsm*,ghis help?
参考答案:
To see far objects clearly, you want your eye muscles relaxed, which makes your lens relatively flat (large focal length). When you f-stop your eye down by closing your eyelids partially (squinting), you are only using the middle of your lens, where it is the most flat. This creates a smaller circle of confusion for the lens, which helps you see distant objects more clearly.
本题详细解析:
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