- #1
nantz
- 10
- 0
I don't know which mentor to address this question to so I'm trying it here.
After I have stirred my coffee I always tap the spoon on the lip of the cup. As I do so the pitch keeps rising until the coffee is no longer moving. I've been curious about this for years and hope somebody can answer the question. Why does the pitch rise in moving coffee and stop in stilled coffee.
Thank you,
nantz
After I have stirred my coffee I always tap the spoon on the lip of the cup. As I do so the pitch keeps rising until the coffee is no longer moving. I've been curious about this for years and hope somebody can answer the question. Why does the pitch rise in moving coffee and stop in stilled coffee.
Thank you,
nantz