Why is a kettle louder BEFORE it boils?
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7 سال پیش
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So its always bugged the
So its always bugged the hell out of me why a kettle makes most noise before it boils, then becomes almost silent when it actually boils. However when you get a high speed camera on it, it becomes very obvious very quickly! The noise is actually made by the collapse of steam bubbles in colder water. At about 70 C you have the most number of these bubbles collapsing. As the temperature of the water gets higher, the steam in the bubbles doesnt condense as well, meaning the bubbles have a longer lifetime.
7 سال پیش
در تاریخ 1396/12/21 منتشر شده
است.
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