Quantum theory, although of tremendous scientific value, has nevertheless prompted debate among physicists. The debate arose because quantum theory addresses the peculiar properties of minute objects such as photons and electrons. While one type of experiment shows that these objects behave like particles, with well-defined trajectories through space, another demonstrates that, on the contrary, they behave waves, their peaks and troughs producing characteristic "interference" effects. However, scientists have failed to devise an experiment to demonstrate both behaviors simultaneously.
In the 1920s, two alternate interpretations of quantum theory attempted to resolve this apparently contradictory wave-particle duality. Physicist Niels Bohr argued that wave-particle properties are not contradictory, but complementary. Contrary to our intuition that an object continues to exist in some determined form even though we cannot perceive it, he concluded that the physical of a quantum object is actually undetermined before the object is observed via experiment.
Physicist Werner Heisenberg's "uncertainty principle," by contrast, postulated that we cannot precisely determine two complementary properties, such as position and momentum, of a quantum object simultaneously: if we measure an object's position with absolute certainty, then there is an infinite uncertainty in its momentum, and vice versa. He concluded that although we are limited in our ability to measure objects at the atomic and subatomic levels, their position and momentum are nonetheless defined all along.
All of the following are mentioned in the passage as possible characteristics of quantum objects EXCEPT
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文章结构：
点明主旨：Quantum theory的争论
1 争论的原因
2 关于争论的不同观点
3对于不同的观点的评价
4 为了解决争论，有2个不同的观点
细节题，定位第一段
A. a minute size
B. momentum
C. position in space
D. sporadic movement
E. wave-like behavior
Correct：D
A.quantum theory addresses the peculiar properties of minute objects B/C.we cannot precisely determine two complementary properties, such as position and momentum, of a quantum object simultaneously E.another demonstrates that, on the contrary, they behave waves D.sporadic movement在文中没出现过
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2019-09-11 11:30:55
定位第一段，有minute， 有wave，有space，where is momentum?
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2018-07-27 19:11:59
gmat给我750啊回复考到770不是梦
第二段 by contrast, postulated that we cannot precisely determine two complementary properties, such as position and momentum,
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2018-09-29 12:44:04
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