Why is the outer surface of a solar cooker blackened? name one more such device.
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Heat is absorbed more by black surfaces than surfaces which are lighter in colour.
The lighter coloured outer surfaces reflect heat while the black surfaces absorb it making the things inside to cook faster.
Hence, the outer surface of solar cooker is painted black.
The outer surface of solar water heater is also blackened.
Heat is absorbed more by black surfaces than surfaces which are lighter in colour.
The lighter coloured outer surfaces reflect heat while the black surfaces absorb it making the things inside to cook faster.
Hence, the outer surface of solar cooker is painted black.
The outer surface of solar water heater is also blackened.
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