3月20日,山東鄒平縣實(shí)驗(yàn)中學(xué)的學(xué)生在立雞蛋。當(dāng)日是春分,我國(guó)民間有在這天立雞蛋的傳統(tǒng),在春分立蛋的說法中,認(rèn)為春分這一天,太陽(yáng)直射在赤道上,地球的引力會(huì)發(fā)生變化,雞蛋所受到的重力會(huì)隨著引力的變化而變化,因此雞蛋會(huì)更容易站立起來。中新社發(fā) 董乃德 攝
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