This is a fascinating question ! It makes you stop and try to
figure out what "ordinary" light might be.
ALL light is emitted by atoms.
That statement might possibly need some refinement for the case
where light and a bunch of other stuff comes pouring out of the core
of a star, or from the fireball of a nuclear weapon. But any light that
you and I have ever seen in the course of our daily lives has been
emitted by atoms.
Light bulbs aim to emulate the light emitted by the Sun, which radiates as a black body at 6000 degrees C. The light is emitted over the entire visible spectrum. Some bulbs produce monochromatic light, sodium street lights for example.
Spectroscopic analysis of the light emitted by the star.
No, most lasers emit light at a different frequency than UV.
The intensity of a line is proportional to the number of photons emitted or absorbed by the atoms. It depends on the number of atoms giving rise to the line.
Atoms are not invisible because they can interact with light, which allows us to see them using tools like microscopes. Light can be absorbed, emitted, or scattered by atoms, providing us with information about their presence and behavior.
light emitted from excited atoms occurs only at specific wavelengths
There different colors emitted
Ordinary light is emitted from various sources with different phases and wavelengths, leading to random and constantly changing interference patterns. This lack of a fixed phase relationship between light waves prevents ordinary light from being coherent. Coherent light sources, like lasers, have a single wavelength and phase, allowing for stable interference patterns.
Light bulbs aim to emulate the light emitted by the Sun, which radiates as a black body at 6000 degrees C. The light is emitted over the entire visible spectrum. Some bulbs produce monochromatic light, sodium street lights for example.
Spectroscopic analysis of the light emitted by the star.
fluorescence
No, atoms cannot be seen with an ordinary light microscope. Atoms are much smaller than the wavelength of visible light, so they cannot be resolved using traditional optical microscopes. Specialized equipment such as scanning tunneling microscopes or atomic force microscopes are needed to visualize atoms.
Light is emitted due to the de-excitaton of electrons from higher orbits of the various atoms of the light source.The de-excitation can also be to different levels in different atoms resulting in emission of different wavelengths.A light source will have numerous atoms in it.When you take two light sources it is not possible for all the atoms to get de-excited to the same shell at the same time(causing phase difference) that is why two independent sources cannot be coherent.
It is not visible by the naked eye.
Light can slow down in different mediums because it interacts with the atoms and molecules in those materials. When light enters a medium, it can be absorbed and re-emitted by the particles in the material, causing it to travel at a slower speed than in a vacuum. This process is known as light scattering and is responsible for the phenomenon of light slowing down in different mediums.
The quantum theory of energy levels within atoms was aided by the emission spectrum. When excited with light, different elements emitted photons of different frequencies. The frequencies were different because the energy difference from excited to low energy state was different depending on the element.
There different colors emitted