some applications of heat radiations
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Answer:
Some common examples of Radiation are Ultraviolet light from the sun, heat from a stove burner, visible light from a candle, x-rays from an x-ray machine. All life on Earth depends on the transfer of energy from the Sun, and this energy is transferred to the Earth over empty space.
Explanation:
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Answer:
When we sit beside a fire, the heat of fire reaches us by radiation.
The cooling fins at the back of our refrigerator need to radiate its heat quickly to the surroundings. Its surface is made rough and painted black.
During hot summer days, it is advised to wear white or light-colored clothes. White color absorbs less heat than dark colors.
In cold areas, a greenhouse is used for better growth of plants. Radiation from the sun passes through the glass or plastic and warms up the soil and plants. Plants and soil absorb and emit radiation and increase the temperature in the greenhouse. Plants grow well in the increased temperature of the greenhouse.
Vacuum flasks is designed to keep liquids hot by minimizing heat losses in four possible ways conduction, convection, radiation, and evaporation. Conduction and convection through the sides of the flask are prevented by vacuum between the double glass walls of the flask. Conduction through the trapped air above the liquid is minimum since air is a very poor conductor of heat. The stopper is usually made of plastic which is also a poor conductor of heat.