Blackbody Radiation: Questions Answered on Causes & Oscillators

In summary, the conversation discusses the causes of blackbody radiation and how it differs from the emission spectra of atoms. The classical theory suggests that thermal radiation is emitted by accelerated charged particles, possibly electrons, near the surface of an object. However, Planck's theory explains it as a result of quantum oscillators, possibly atoms or electrons, within the object. The continuous spectrum of blackbody radiation is not caused by electron transitions within the atom, as in the case of emission spectra. This is clarified in further resources provided.
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Viona
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Hi every one
I have three simple questions: what causes Blackbody radiation? what does Planck meant by the oscillators? why the Blackbody radiation is continuous while the emission spectra of atoms (gases) is discrete?

I know that the discrete emission spectra of atoms was explained by Bohr's theory: the electrons in the atoms are in orbits with different energies and when an electron goes from higher energy orbit to a lower energy orbit it emits an electromagnetic radiation with specific frequency.

Classical theory tried to explain thermal radiation in condensed matter (continuous spectrum) by assuming that the thermal radiation originates from accelerated charged particles in the atoms near the surface of the object; those charged particles emit radiation much as small antennas do. Did they mean that these charged particles are the electrons? was this a correct idea?

Planck explained it by assuming that there are atomic oscillators and they are quantum oscillators . What are these atomic oscillators? they are the electrons inside the toms? they are atoms oscillating due to the thermal energy? or both of them?

Does the continuous spectrum from blackbody radiation is caused by electron transitions from one orbit to another inside the atom?
 
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Related to Blackbody Radiation: Questions Answered on Causes & Oscillators

1. What is blackbody radiation?

Blackbody radiation is the electromagnetic radiation emitted by a perfectly black object at a given temperature. It is also known as thermal radiation or Planck radiation.

2. What causes blackbody radiation?

Blackbody radiation is caused by the thermal motion of charged particles within the object. As these particles move, they emit electromagnetic radiation in the form of photons.

3. Why is blackbody radiation important?

Blackbody radiation is important because it helps us understand the behavior of electromagnetic radiation and the properties of matter at high temperatures. It also has practical applications in fields such as astrophysics, thermodynamics, and spectroscopy.

4. How is blackbody radiation related to oscillators?

Oscillators are systems that exhibit periodic motion, such as vibrating atoms or molecules. Blackbody radiation is produced by the oscillations of charged particles within the object, making it closely related to the concept of oscillators.

5. Can blackbody radiation be observed in real life?

Yes, blackbody radiation can be observed in real life. For example, the glow of an incandescent light bulb is caused by blackbody radiation. Stars also emit blackbody radiation, which allows us to study their properties and temperatures.

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