It seems a paradox that our efficiencies are much higher than ever before while our leisure time is increasingly diminishing, but it is actually the reality. The greater our mobility, the more our destinations each day; the more time-saving facilities we use, the more activities we try to attend each day; with more convenient access to information, we try to assimilate more of it each day. Nowadays we are forced to do more by the superiors, the competitors, or even by ourselves. Fortunately, we have more opportunities and choices than our predecessors, but at the same time, unfortunately, we have to confront with much more challenges and suffer from much more pressure. Therefore, people may be not able to enjoy their leisure time much in such an increasingly competitive society, consequently resulting in some serious social problems, such as unemployment, resentment, high suicide rate, anti-social behaviors, and so forth.
伦琴发现X射线
In 1895, when Wilhelm Roentgen was working in darkened room, trying to determine the penetrating power of cathode rays, he noticed that a faint light appeared. These rays had special penetrating power to pass through various substances, and they are the very X-rays which comprehensively utilized in medical services and scientific researches.
Penicillin
In 1928, Alexander Fleming left some unwashed plates containing some bacteria in his lab while he was on holiday. When he came back, he found that a mold was all over the plate and all the bacteria were dead. This amazing mold, Penicillin, could inhibit the growth of many deathful bacteria, and was later comprehensively used in medical treatment.
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