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科研科普专家曹则贤

撒贝尼兄弟称量实验道具

撒贝尼兄弟示范羽毛和铁球

撒贝宁

真空重力场
中国网娱乐8月8日讯 央视综合频道周日黄金档热播科普综艺《加油!向未来》,在上周日第四期节目播出之后,除了暖萌导盲犬引发了众多网友共鸣,“颠覆”经验判断的“铁球和羽毛”实验更是反响热烈。伽利略比萨斜塔实验众所周知,但科研科普专家曹则贤却在节目中指出这一被惯性认为是科学事实的故事只是一个传说;而看似天不着边际的“瞬间移动”,却是有科学原理支撑的合理假设。未来如果真空隧道建成,从厦门到台北所用时间竟不足一分钟。网友纷纷感慨:“科学这题一不小心就超纲,以后再也不敢轻易凭经验判断下结论。”
比萨斜塔实验有待商榷 一分钟厦门到台北却有望成真
伽利略当众证明两个铁球同时着地,因不惧权威勇敢探索的科学精神而在受历史故事中颇受好评。一直以来,似乎在大多数人的认知中,从未怀疑过这个故事的真实存在性。《加油!向未来》科研科普专家曹则贤在当期节目中,可谓“一语惊醒梦中人”。他指出这个著名的实验只是一个口口相传的科学故事,而非科学事实。并且,即便伽利略真的在比萨斜塔做过这个重力实验,两个铁球同时着地的现象也不足以成为严格的科学实验。一方面比萨斜塔自身高度有限,铁球落地时长不足以构成有效判断,另一方面肉眼也无法在较短的时间里精确分辨释放和落地是否同时。节目播出之后,“可能读了个假书”成为诸多观众的内心独白。
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