Thermal Radiation and Heat Engines

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SUMMARY

A solid hot body in outer space emits thermal radiation as black-body radiation until it reaches thermal equilibrium with its surroundings. The surrounding temperature in space is approximately 4K, which means the hot body will not reach absolute zero but will stabilize at this temperature. This equilibrium occurs as the body radiates heat into the colder environment of space.

PREREQUISITES
  • Understanding of black-body radiation principles
  • Knowledge of thermal equilibrium concepts
  • Familiarity with the temperature scale, particularly Kelvin
  • Basic principles of thermodynamics
NEXT STEPS
  • Research the Stefan-Boltzmann Law and its application to thermal radiation
  • Learn about the concept of thermal equilibrium in different environments
  • Explore the properties of black-body radiation and its significance in astrophysics
  • Investigate the effects of temperature on material properties in space
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Students and professionals in physics, astrophysics, and engineering, particularly those interested in thermodynamics and heat transfer in space environments.

Smacal1072
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Hey all,

This is a simple question:

Lets say we have a solid hot-body in outer-space that's emitting thermal radiation. Assuming that it doesn't sublimate, will it simply radiate black-body radiation until it reaches absolute zero? This doesn't sound right.

Thanks
 
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well outerspace isn't absolute zero, i would assume it would reach equilibrium by radiating its heat. at that point it would be the temperature of space (somewhere like 4K i think)
 
Thks!
 

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