Is it possible to build a catch all electormagnetic wave spectrum generator?

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SUMMARY

The discussion centers on the feasibility of constructing a catch-all electromagnetic wave spectrum generator capable of capturing various forms of electromagnetic radiation, including X-rays and infrared. The concept involves using conductive materials and antennas of varying sizes, potentially utilizing expansive areas like salt beds or deserts. However, a professor highlighted that such a device would not generate significant energy due to the conservation of energy principle and the limitations imposed by the second law of thermodynamics, which states that energy in thermal equilibrium cannot be harvested effectively.

PREREQUISITES
  • Understanding of electromagnetic radiation types (X-rays, infrared, etc.)
  • Knowledge of conductive materials and their properties
  • Familiarity with antenna design and functionality
  • Basic principles of thermodynamics, particularly the second law
NEXT STEPS
  • Research advanced antenna design techniques for capturing electromagnetic waves
  • Explore the principles of energy conservation in electromagnetic systems
  • Investigate the applications of solar thermal power plants
  • Study the characteristics of perfect black bodies in thermodynamic contexts
USEFUL FOR

Engineers, physicists, and researchers interested in electromagnetic theory, energy harvesting technologies, and thermodynamics will benefit from this discussion.

GreenAce92
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I had "posited" or proposed this idea to a professor of mine about building a device which could capture all forms of electromagnetic radiation with varying sized charged particles and a solution that was conductive.

Another option is a type of electromagnetic fabric which is basically variable sized antennas from nm to meter scale, sort of like expanding exponential curves that are made from conductive wire that capture stray electromagnetic waves.

For the example in the first paragraph (sentence) I thought it could capture everything from xrays, infrared, light etc...

My professor said it wouldn't generate much energy.

What if it was really big! Let's say we converted the salt beds / deserts into these electromagnetic catching generators?

Is it worth investigating?
 
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It would not generate any energy, as energy is conserved. You descibe an object known as perfect black body. There are very good approximations to this, but they cannot be used to harvest energy (unless you expose them to sunlight, solarthermal power plants exist) - in thermal equilibrium, they have to radiate away the same amount of energy, this follows from the second law of thermodynamics.
 

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