Geography, asked by zoya123434, 1 month ago

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Answered by Hansika121
2

Difference between Isolation and Terrestrial radiation.

Isolation :

¤ Insolation is the process by which the solar radiation is intercepted by the earth.

¤ It is a measure of the solar energy that is incident on the surface of the earth for a particular set of time.

¤ Insolation travels in short waves.

¤ Insolation is measured by the amount of solar energy received per square centimetre per minute.

¤ There are several factors that affect Insolation. They are: solar constant, angle of incidence of sun’s rays, duration of the day and others

Terrestrial radiation :

¤ Terrestrial radiation is defined as the radiation that goes back to the atmosphere and the space.

¤ In Terrestrial radiation 34 units are transferred to the atmosphere and 17 units go back to space.

¤ Terrestrial radiation occurs through long waves. 51 units out of 100 units of solar radiation are involved in isolation.

¤ Terrestrial radiation is measured using the Precision Infrared Radiometer.

¤ The factors which affect Terrestrial radiation are surface reflection, solar elevation, aerosols, air pollution etc.

Difference between radiation and convection.

Radiation :

¤ In radiation, heat transfer occurs through electromagnetic waves without involving particles.

¤ The heat transfer occurs in all objects with a temperature greater than 0 K.

¤ The heat transfer in radiation is the fastest.

¤ The heat transfer occurs through electromagnetic waves.

¤ It follows the law of reflection and refraction

Convection :

¤ In convection, the heat transfer takes within the fluid

¤ The heat transfer occurs due to the difference in density.

¤ The heat transfer in convection is faster.

¤ The heat transfer occurs through intermediate objects. For example, heat transfer between air and water

¤ It does not follow the law of reflection and refraction

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