When the temperature of the body is greater than absolute zero, interatomic collisions cause the kinetic energy of the atoms or molecules to change. This results in charge-acceleration and/or dipole oscillation which produces electromagnetic radiation, and the wide spectrum of radiation reflects the wide spectrum of energies and accelerations that occur even at a single temperature.
No. As pointed out above, this is absolutely not the explanation. Doppler broadening of the spectral lines is present, but much too small to produce a continuous spectrum. And the majority of the photons are produced in other ways, simply from the thermal motion of the atoms.edguy99 said:We see all sorts of other photon energies that are generated since the hydrogen on the sun surface is moving around. If the hydrogen atom is moving away from us, we will see a photon with less than 1.89eV (red shifted), if moving towards us, it will have more than 1.89eV energy (blue shifted)
Bill_K said:... much too small to produce a continuous spectrum. And the majority of the photons are produced in other ways, simply from the thermal motion of the atoms.
The Sun's emission spectrum refers to the range of wavelengths of electromagnetic radiation emitted by the Sun. It includes all types of radiation, such as visible light, infrared, and ultraviolet. The spectrum is unique to the Sun and can be used to study its composition and temperature.
The redshift and blueshift in the Sun's emission spectrum are caused by the Doppler effect. This effect occurs when an object is moving towards or away from an observer, causing a change in the observed wavelength of light. When the Sun is moving away from us, its light appears to be shifted towards the red end of the spectrum, known as redshift. When it is moving towards us, the light is shifted towards the blue end of the spectrum, known as blueshift.
The amount of redshift/blueshift in the Sun's emission spectrum can be used to determine the speed and direction of the Sun's motion. This is possible because the larger the redshift/blueshift, the faster the object is moving. By analyzing the shifts in the emission spectrum, scientists can track the Sun's motion through space.
Visible light is a part of the Sun's emission spectrum and makes up a small portion of the total range of wavelengths. The visible light emitted by the Sun is what we see as sunlight. It is also important in studying the Sun's composition, as different elements in the Sun's atmosphere emit light at different wavelengths, creating a unique fingerprint in the spectrum.
The Sun's emission spectrum can provide valuable information about the composition and temperature of its atmosphere. By analyzing the spectrum, scientists can identify the elements present in the Sun and their relative abundance. They can also determine the temperature of the Sun's outer layers by studying the intensity of different wavelengths of light in the spectrum.