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Long-term experiment : ウィキペディア英語版 | Long-term experiment A long-term experiment is an experimental procedure that runs through a long period of time, in order to test a hypothesis or observe a phenomenon that takes place at an extremely slow rate. Several agricultural field experiments have run for more than 100 years, but much shorter experiments may qualify as "long-term" in other disciplines. An experiment is "a set of actions and observations", implying that one or more treatments (fertilizer, subsidized school lunches, etc.) is imposed on the system under study. Long-term experiments therefore contrast with nonexperimental long-term studies in which manipulation of the system studied is impossible (Jupiter's Great Red Spot) or undesirable (field observations of chimpanzee behavior). ==Physics==
The Oxford Electric Bell has been ringing at Oxford University since 1840, although there is some reason to believe it may be 15 years older. The Beverly Clock at the University of Otago has been running since 1864. The pitch drop experiment has been running at the University of Queensland since 1927.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Long-term experiment」の詳細全文を読む
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