3

Thermal Radiation

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3.1 INTRODUCTION

In the absence of heat, life cannot be sustained in the universe. Thermal radiation serves as an essential ingredient for the formation (and existence) of life in the cosmos Thermal radiation represents a finite region of the electromagnetic spectrum.

Thermal imaging cameras permit the ability to observe the flow of thermal energy between two bodies. Thermal images from space have illustrated the flow of energy within the universe.

Thermal radiation is the transfer of energy by electromagnetic waves, which have a range of wavelengths. One example of thermal radiation heat transfer is that of energy transfer ...

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