Why Do Kettles Make Noise
The sound of a boiling kettle is one of the most recognizable sounds in the kitchen. But why do kettles make noise? The main reason is because of two vibrating parts: the heating element and the water inside. When an electric current flows through a metal heating element, it rapidly heats up and expands due to thermal expansion. This causes it to vibrate, creating a humming or buzzing sound that can be heard when you turn on your kettle....