sciencecapsules

  VISIT: 'MATH IN ACTION' SITE         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 a...