Stirring Tea - Deepstash
Stirring Tea

Stirring Tea

Q. I was absentmindedly stirring a cup of hot tea, when I got to thinking, “Aren’t I actually adding kinetic energy into this cup?” I know that stirring does help to cool down the tea, but what if I were to stir it faster? Would I be able to boil a cup of water by stirring?

  • No.
  • If you stir hard enough that your tea cavitates, its surface area will increase very rapidly, and it will cool to room temperature in seconds. No matter how hard you stir your tea, it’s not going to get any warmer.

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Nan-in, a Japanese master, received a university professor who came to inquire about Zen. Nan-in served tea. He poured his visitor’s cup full, and then kept on pouring. The professor said. “It is overfull. No more will go in!” “Like this cup,” Nan-in said, “you are full...

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