what is emission Spectra and absorbtion Spectra
Answers
Answer:
7At first, in the case of emission spectrum, when the electrons of an atom absorb energy from the surrounding, it jumps from lower energy level to the higher ones. ... In the absorption spectrum, the dark bands which are created during the process of the emission, constitute this spectrum.
Answer:
The emission spectrum depends strongly on excitation wavelength. This has been attributed to differences in the penetration depth of the exciting radiation at different wavelengths. The microcrystalline structure close to the surface may vary with depths and different kinds of excimers will be excited. The variation in the emission spectrum of a thin film of polystyrene which has been grown from a solution of polystyrene in benzene has been studied recently as function of time(44). Concurrent observation of the films by electron microscopy showed that these changes in emission spectrum are strongly correlated to changes in the microcrystalline structure of the films.
an electromagnetic spectrum in which a decrease in intensity of radiation at specific wavelengths or ranges of wavelengths characteristic of an absorbing substance is manifested especially as a pattern of dark lines or bands