Whistling kettle mystery solved!

Ross Henrywood, from the University of Cambridge Department of Engineering, who is the study's lead author carried out the research under the guidance of his supervisor, Dr Anurag Agarwal, a lecturer in aeroacoustics. Drawing on previous research by Agarwal, which identified the source of noise in jet engines, the pair were able to show how sound is created inside a kettle as the 'flow' of steam comes up the spout.