Plank Radiation Spectrum Liquids Wavelength VS Temp

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SUMMARY

The discussion centers on the emission of light from liquids based on their temperature, specifically referencing Planck's radiation spectrum. It establishes that while liquids do not behave as perfect black bodies, they can emit light when heated, with examples including molten lava at approximately 1000 K emitting red light and molten steel emitting bright yellow light. The core of the Earth reaches temperatures around 6000 K, similar to the surface of the sun, indicating significant light emission potential. The conversation highlights the need for data on the wavelengths emitted by various liquids at different temperatures.

PREREQUISITES
  • Understanding of Planck's Law of Black Body Radiation
  • Knowledge of thermodynamics and temperature scales
  • Familiarity with the concept of black body radiation
  • Basic principles of light emission and wavelength
NEXT STEPS
  • Research Planck's Law and its application to liquids
  • Explore the temperature-wavelength relationship in black body radiation
  • Investigate the thermal properties of molten materials like steel and lava
  • Examine experimental methods for measuring light emission from heated liquids
USEFUL FOR

Physicists, materials scientists, and anyone interested in the thermal properties of liquids and their light emission characteristics at varying temperatures.

Albertgauss
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Hello,

Are there any Plank Radiation Spectrums for liquids? What I really want to know is, for a given liquid, what wavelength of light is emitted for a given temperature. For example, if I journey to the center of the Earth, the molten lava is about a thousand degrees, hot enough to emit red light --> thus, it seems I would not be in a dark abyss if I travel to the center of the Earth but a glowing, red-yellow abyss all around me. Or if I fell into a molten lake of steel, this too would not be dark, but bright yellow (as seen from web page images). I could not find this kind of data on any liquid and guessed this concept would be where exotic matter specialists would be most likely to know.
 
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Albertgauss said:
For example, if I journey to the center of the Earth, the molten lava is about a thousand degrees, hot enough to emit red light
About 6000 K in the core, as warm as the surface of sun.
Liquids won't be perfect black bodies, but they can be quite close. Yes, the emit light if you heat them. Steel is a nice example.
 

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