Why does a shiny tea pot stay hotter than a dull brown tea pot ?
Answers
Answer:
heat loss is less due to shiny surface
Answer:
All things other than color being equal, and the temperature of the surrounding room being less than the temperature of the hot teapot, then the the shiny teapot should stay hotter longer than the black one.
The reason for this is that the black one radiates energy away in the form of infrared light (and lower frequency electromagnetic waves) at a faster rate than the shiny one. The rate at which a hot object radiates energy is related to its shininess, and here's the reason why:
Heat travels from hot objects to cold ones. If two objects are at the same temperature, there is no net heat flow. If the room were at the same temperature as a teapot, the rate at which radiant energy is absorbed by the teapot has to be the same as the rate at which it is emitted, in order for the teapot's temperature to remain the same. In this case, the black teapot absorbs and radiates energy at a faster rate than the shiny one.
Explanation:
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