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第七十七章 马德堡半球实验(1 / 2)

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1654年,马德堡市长奥托·冯·格里克听到托里拆利的事,又听说还有许多人不相信大气压强;还听到有少数人在嘲笑托里拆利。因此,虽然远离意大利的格里克在德国,但他很为托里拆利抱不平。

他匆匆忙忙找来玻璃管子和水银,重新做托里拆利这个实验,断定这个实验是准确无误的;再将一个密封完好的木桶中的空气抽走,木桶就“砰!”的一声被大气“压”碎了!

有一天,他和助手做成两个半球,直径14英寸,约37厘米,并请来一大队人马,在市郊做起“大型实验”.

这年5月8日,马德堡市风和日丽,一大批人围在实验场上,熙熙攘攘十分热闹.有的支持格里克,希望实验成功;有的断言实验会失败;人们在议论着、在争论着、在预言着;还有的人一边在大街小巷里往实验场跑,一边高声大叫:“市长演马戏了!市长演马戏了———”

格里克和助手当众把这个黄铜的半球壳中间垫上橡皮圈;再把两个半球壳灌满水后合在一起;然后把水全部抽出,使球内形成真空;最后,把气嘴上的龙头拧紧封闭.这时,周围的大气把两个半球紧紧地压在一起.

格里克一挥手,四个马夫牵来八匹高头大马,在球的两边各拴四匹.格里克一声令下,四个马夫扬鞭催马、背道而拉!好像在“拔河”似的.

“加油!加油!”实验场上黑压压的人群一边整齐地喊着,一边打着拍子.

马德保半球实验纪念邮票

马德保半球实验纪念邮票

4个马夫,8匹大马,都搞得浑身是汗.但是,铜球仍是原封不动.格里克只好摇摇手暂停一下.然后,左右两队,人马倍增.马夫们喝了些水,擦擦头额上的汗水,又在准备着第二次实验.

格里克再一挥手,实验场上更是热闹非常.16匹大马,使劲拉,八个马夫在大

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