Posted by admin on Wednesday, May 27, 2009 · Leave a Comment
When I steam milk in a Styrofoam cup (yes, I know, not healthy) it makes an incredible ruckus. In a ceramic cup it is almost inaudible. Why the difference?
Details: Steam comes out of a 5 inch nozzle at 260 degrees fahrenheit. I steam milk by inserting the nozzle into the liquid.
The styrofoam cup vibrates easier and conducts the sound of the steam bubbling in the milk easier.
Imagine what a speaker is made of? Would you make the speaker out of stone or would you make it out of very thin flexible paper or plastic? So, my answer to your question is because the foam cup is more like a speaker than the stone one in that it conducts the sound better and it vibrates easier.
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