Specific heat refers to the amount of heat required to raise the temperature of one unit mass of a substance by one degree Celsius. It is a characteristic property of the substance and is measured in units of energy per ...
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The walls of a thermos flask are galvanized with a reflective coating to minimize heat transfer by radiation. This shiny coating reflects infrared radiation, reducing heat loss and maintaining the temperature of the contents.
The inner walls of a thermos flask are shiny to reflect infrared radiation back into the liquid, thereby minimizing heat loss through radiation and helping to maintain the temperature of the contents for a longer period.
Sir James Dewar invented the Thermos flask in 1892. He designed it to minimize heat transfer by creating a vacuum between two layers, effectively keeping liquids hot or cold for longer periods.
The double walls of the shiny inner wall and the outer cover prevent heat from escaping or entering. The thermos flask’s design includes a vacuum between the double walls and a shiny inner surface to minimize heat transfer by conduction, ...