If I run the bath and close my eyes, I can tell when the water exiting the faucet goes from cold to hot. The loud rushing sound deepens by half an octave. What causes the tone to drop?
In: 67
The tone change is because the viscosity if a liquid is related to it’s temperature. Although to the eye it isn’t that different to look at, it is “runnier” when hot. You can hear this in it’s pitch as it pours.
Think of hot honey/syrup Vs cold honey/syrup
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