Guinness surge

Finurlig, men krever den nitrogen? Vil ikke ultralyden gjøre at CO2-boblene samles og forsvinner raskere?


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Vet det, men ultralyd omdanner mange små bobler til flere store, her fra Hielscher "When sonicating liquids, the sound waves that propagate from the radiating surface into the liquid media result in alternating high-pressure (compression) and low-pressure (rarefaction) cycles, with rates depending on the frequency. During the low-pressure cycle, the ultrasonic waves can create small vacuum bubbles or voids in the liquid. The large number of small bubbles generates a high total bubble surface area. The bubbles are also well distributed in the liquid. Dissolved gas migrates into these vacuum (low pressure) bubbles via the large surface area and increases the size of the bubbles."

Har ikke fat selv.


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Hver gang jeg ser en Guinness med perfekt skum tenker jeg på de legendariske ordene fra fotballspilleren Gazza. (Som har sitt å stri med..):
"He looked like a pint of Guinness running around in the second half. Gascoigne describes Paul Ince's bandaged head."
 
Hver gang jeg ser en Guinness med perfekt skum tenker jeg på de legendariske ordene fra fotballspilleren Gazza. (Som har sitt å stri med..):
"He looked like a pint of Guinness running around in the second half. Gascoigne describes Paul Ince's bandaged head."

Det der er det dritmorsomste jeg har hørt på lenge.
 
Tilbake
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