Despite these difficulties, quanta have important theoretical implications for physics. It used to be supposed that, in the observation of nature, the universe could be divided into two distinct parts, a perceiving subject and a perceived object. In physics, subject and object were supposed to be entirely distinct, so that a description of any part of the universe would be independent of the observer. The quantum theory , however, suggests otherwise, for every observation involves the passage of a complete quantum from the object to the subject, and it now appears that this passage constitutes an important coupling between observer and observed. We can no longer make a sharp division between the two in an effort to observe nature objectively. Such an attempt at objectivity would distort the crucial interrelatioship of observer and observed as parts of a single whole. But, even for scientists, it is only in the world of atoms that this new development makes any appreciable difference in the explanation of observations.

　　17. The primary purpose of the passage is to

　　discuss a problem that hinders precise perception of the world

　　point out the inadequacies of accepted units of measurement

　　criticize attempts to distinguish between perceiving subjects and perceived objects

　　compare and contrast rival scientific hypotheses about how the world should be measured and observed

【GRE阅读练习每日一篇(三十一)】相关文章：

★ gre阅读练习每日一篇(二十三)

★ gre阅读练习每日一篇(十五)

★ GRE阅读练习每日一篇(三十七)

★ GRE阅读练习每日一篇(三十四)

★ gre阅读练习每日一篇(五)

★ gre阅读练习每日一篇(十七)

★ gre阅读练习每日一篇(四十八)

★ gre阅读练习每日一篇(四十)

★ gre阅读练习每日一篇(二十六)

★ gre阅读练习每日一篇(三十九)