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ZingPath: Nature of Subatomic Particles

Black-Body Radiation and Light Quantas

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Nature of Subatomic Particles

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Black-Body Radiation and Light Quantas


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You will discover to expand your knowledge of the atom in an exploration of the nature of its parts. Learn about radiation, the dual nature of light, and get an introduction to the world of quantum mechanics.

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Now You Know

After completing this tutorial, you will be able to complete the following:

  • Define black body radiation.
  • Understand that electromagnetic rays show particle characteristics.
  • Explain the relationship between blackbody radiation and light quanta.

Everything You'll Have Covered

What causes an object to emit electromagnetic rays?

~ Objects radiate electromagnetic rays due to their temperatures.

vWhat is a black body?

~ A black body is an object that absorbs all of the electromagnetic beams falling on it.

What was the difference between Planck's findings on blackbody wavelengths and the classical physics model of electromagnetic beams?

~ Planck's model showed that electromagnetic beams consist of quanta, or particles. The classical physics model stated that electromagnetic beams must be in a wave structure. The two ideas were contradictory.

What happened that offered some validity to Planck's original findings?

~ While Albert Einstein was studying photoelectric effects, he found that electromagnetic rays showed particle characteristics. This idea matches Planck's original findings, which stated that electromagnetic beams consisted of quanta, or particles.

Tutorial Details

Approximate Time 2 Minutes
Pre-requisite Concepts Students should have a general understanding of the following terms: blackbody, light quanta, and Planck.
Course Chemistry
Type of Tutorial Animation
Key Vocabulary blackbody, light quanta, Planck