How do we boil a cup of water? Take Some water in a metal vessel; Keep it on any stove; watch till it boils, lift the vestal with cloth or fork and transfer the water to Cups carefully. A common man may wonder what is there to further improve the process of boiling water. But there is a lot to improve. We need quick and efficient heating. automatic switch off, easy and safe transfer of water, thermal insulated handle, etc.
Modern electric Kettle satisfies the above requirements. It is a sealed unit. Hence heat cannot escape easily. The heating element is in direct contact with water. Hence heat is transferred efficiently. In a normal stove, heat is transferred to the vessel and then to water. A bi-metal strip in the Kettle senses the boiling point and shuts off the unit automatically. That is the great advantage. One need not Keep watching the Kettle. Using an insulated handle, one can lift the container from the base which is connected to mains. Hence length of the electric cord does not matter. you can pour the hot water safely through the nose without spilling.
Simple water boiling is made into a technical art. Man has not only given deep thoughts for making a rocket but even for boiling cup of water. Electric Kettle may not be the last word in water boiling. Improving, Refining, perfecting is the way of life in science. There is no full slop to any product or design. Smartphones are a good example.
The writing has evolved from quill to fountain pen, gel pen etc. Even I heard that there exists a pen that do not require ink refill for one's entire life.
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