No need to hurry, hopefully
(a)–(c) Schematic of the experimental setup.
The aeroacoustics of a steam kettle.
Researchers have finally worked out where the noise that makes kettles whistle actually comes from – a problem which has puzzled scientists for more than 100 years.
A basic kettle whistle consists of two plates, positioned close together, forming a cavity. Both plates have a hole in the middle, which allows steam to pass through.
Although the sound of a kettle is understood to be caused by vibrations made by the build-up of steam trying to escape, scientists have been trying for decades to understand what it is about this process that makes sound.
full paper at Journal of Physics of Fluids.
I read about this a couple weeks ago.
Sometimes in science it feels like everything has already been discovered or solve. It’s so refreshing to see that until a month ago, you were diving into an unknown area of science every time you wanted to make a cup of tea.