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Even as adults we still enjoy blowing bubbles, don’t we?
即使我們已經成年但卻仍然喜歡吹泡泡，對吧？
If you’ve ever wondered why blowing on a thin film of soapy water creates bubbles, this is your lucky day.
如果你也曾好奇為何肥皂水薄膜能吹出泡泡，那么今天就來幫你解惑。
All liquids have a property called surface tension. Take water, for example.
所有液體都有“表面張力”的特性，水也不例外。
Water molecules are strongly attracted to each other.
水分子會相互吸引。
Therefore the molecules on the surface of the water are not attracted towards the air, but rather towards the rest of the water.
因此，水表面的分子會被其余的水分子吸引，而不受空氣分子吸引。
This attraction is what creates surface tension, forming a sort of skin on the water’s surface.
這種引力引發表面張力，繼而在水面形成一層類似皮膚的薄膜。
Surface tension is also what accounts for soap bubbles.
表面張力也是肥皂泡的成因。
Dipping a wand into regular water won’t work because the water’s surface tension is so strong that the molecules would rather bunch together in a puddle than be stretched across the opening of the wand.
將“魔術棒”放入水中浸泡后無法吹出泡泡，這是由于水表面的張力太強，水分子會凝聚在一起，無法在“魔術棒”的開口處拉伸。
譯文為可可英語翻譯，未經授權請勿轉載!
