Radiation

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Radiation: Overview

This topic discusses the concept of radiation that is related to heat transfer. We will also learn about the properties of radiations. It also explains the Dewar flask device and outlines its mechanism in detail.

Important Questions on Radiation

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Newton's law of cooling applies to both _____ both.

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Is Newtons law of cooling accurate?
 

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What are the limitations of the Newton's cooling law?

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What is the principle of Newton's law of cooling?
 

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What is a bolometer?

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What is spectral energy density?

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What does the spectral density tell us?

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What is spectral density of radiation?

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What is the difference between energy spectral density and power spectral density?

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What is emissivity in simple words?

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How is total emissivity calculated?

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What is the emissivity value?

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What is the temperature variation?

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What are the weather conditions in deserts?

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Why diurnal range of the temperature is more in deserts?

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What are the variations of the desert?

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What is the working principle of radiation pyrometer?

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How is temperature determined?

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What law is used to measure the temperature of sun?

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How does a pyrometer measure temperature?