Is it possible to boil water by stirring it?

In summary, while stirring water can increase its temperature through kinetic energy, it is generally not possible to boil water solely by stirring it. Boiling requires the addition of heat to raise the water's temperature to its boiling point, which stirring alone cannot achieve. However, in some theoretical scenarios with extreme conditions and sufficient energy input, stirring could contribute to reaching boiling temperatures.
  • #36
Weird.

I connected my Kill-a-Watt meter to my blender and microwave and found their efficiencies in heating water:

Microwave oven: 29%
Blender: 25%

Unfortunately for my blender, it draws a mere 330 watts whilst my microwave draws 1300 watts.
 
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  • #37
OmCheeto said:
My microwave is 46 years old,
Perhaps the seal needs checking.
 
  • #38
OmCheeto said:
My microwave is 46 years old, which means it's losing about 5½ watts per year. If it continues at the same rate it with be 2036 when it reaches half of its rated value. Perhaps I'll take some load off it by heating my water in my blender, as it's only 34 years old.
Wait a bit longer and you'll have a refrigerator can generate electricity as a byproduct.
 
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