What is the whispering kettle?
The kettle is a kettle that warns users when the water inside has boiled. Design of the kettle causes steam to escape the whistle. This design has existed for centuries and has remained popular at present. The size, shape and length of the discharge are determined by the sound of the whistle. Modern electric kettle can have an automatic closure switch and whistle. If this air stream is divided by a fixed object, it vibrates the object audibly, amplifies the sound and changes its tone. This principle of aerodynamics has been understood for thousands of years and can be easily demonstrated with or without tools. The first types of whistling the kettle probably had narrow discharges with deliberate design or others. Later designs added a metal insert to make the sound louder and more musical.
The end is a simple, even primitive device used for heating water in cultures around the world. Many of them are heated by their placement on the stove, on fire or on another heat source; Some have their own heating elements. When the water in the kettle ZHIt says, becomes a steam, a form of water vapor with high heat and pressure. The pressure causes the steam to quickly leak and the whistle with a whistle. As the amount of escape steam increases, the sound of the whistle becomes louder and more permanent.
This serves as an effective way to alert users to Whišťská kettle, that water is ready for use. The sound recedes as soon as the kettle is removed from the heat. The design of the whistling kettle determines the sound of the whistle; For example, a longer discharge will provide a louder whistle. A larger hole for steam to escape will provide a lower tone. Other variations can be created by changing the shape of the whistle itself.
It is best to choose a whistle kettle with a whistle that lifts out of the way to pouring. Some suggestions require users to remove the whistle to pour, but it increases the risk of burns from steam leakage. Many electric teapots automatically turn off when the water reaches the boiling point and keeps the water at the initial temperature. While the electric kettle is faster and otherwise efficientMany people still prefer a simple and somewhat romantic whistle design.