Why do thermos flask bottles advertise 24hrs cold and 12hrs hot. Shouldn’t it be the same amount of time for temps in both directions?
In: 1049
Let’s use food safety numbers. 40F is cold safe and 140F is hot safe. We’ll let room temperature be 70F. Temperature changes faster the farther it is from room temperature. Something cold is only 30F from room temperature, something hot is 70F from room temperature. The hot thing will get cooler much faster than the cold thing will get warmer.
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