Its the light given off when you roast (of fry or even casserole) any element. Like in a light bulb glowing, not all the wavelengths of light are given off equally. By looking at what frequencies are there and which are missing you can tell which element you are looking at. You can tell what a distant star is made of using the same principle.
thomas Jefferson
Niels Bohr
The emission spectrum of a star is the spectrum of frequencies for emitted electromagnetic radiation during the transition of an atom's electrons from a high-energy state to a low-energy state. The emission spectrum can differ depending on the temperature and composition of the star.
According to <http:/www.heraeus-noblelight.com/en/uv-disinfection-oxidation/information-for-disinfection-and-oxidation/services-and-events/emission-spectra-of-germicidal-lamps.html> 254nm appears to be the most common. Shorter wavelengths appear to create ozone
stimulated emission causes due to the energy difference between the higher and lower energy level state, but it doesn't depends in the case of spontaneous emission . spontaneous emission causes without any stimulation .In stimulated emission energy transfer is twice the energy transfer of spontaneous emission.
The emission spectrum can be used to determine the composition of a material
There are three main types of infrared spectra: absorption spectra, emission spectra, and reflection spectra. Absorption spectra are produced when a material absorbs infrared energy, emission spectra are produced when a material emits infrared radiation, and reflection spectra result from the reflection of infrared radiation off a material.
thomas Jefferson
an emission spectrum that consists of a continuum of wavelengths.
Because an emission spectrum is specific to an element.It can be used to identify the element
The lines are at the same frequencies
Some examples of every day objects with vivid emission spectra are the following: glass, water droplets, and chameleon paint jobs.
Emission spectrum: lines emitted from an atom.Absorption spectrum: absorbed wavelengths of a molecule.
Two common sources of continuous spectra used in emission spectroscopy are the electrical discharge lamps and the incandescent lamps. Electrical discharge lamps, such as the mercury vapor lamps, produce continuous spectra due to the excitation of atoms or molecules in the gas discharge. Incandescent lamps, on the other hand, produce continuous spectra because of the thermal emission from the hot filament.
The different countries that joined in the Olympic games
Emission spectrometry is an old and largely known method for quantitative and qualitative analysis of elements.
They have broad emission lines of highly ionized elements.