伯努利原理－減壓效應Bernoulli's principle - pressure reduction
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傻hi 倆個，吹波波？！
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@EchAeee 唔係亂同散..
風筒令紙上方的空氣流動速度大幅上升
=>根據Bernoulli's principle, pressure降低
=>下氣壓高過上氣壓, 所以紙被向上壓
同樣現象例如滑浪風杋, 足球/乒乓球的曲球....
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其實係因為。。。
好似紙為例。。 我地係紙上面吹 咁紙上面既氣壓會亂同散
同時下面既氣壓就可以輕易咁壓起張紙
之後咪升既ＬＯＲ。。
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@kaikai963 唔關形狀事, 你可以係屋企用兩個正方形o既空樽 / 罐試下
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我知點解!!
圓型可以比輕流包住
所以雙撞
但係木唔得 佢唔夠圓滑
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=O pretty
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