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Red & violet.
Because the spectra of elements is determined by the energy of transitions of electrons between two allowed quantum states. Since these energy differences can have only certain specified values, the spectrum consists of lines: The spectrum frequency values intermediate between the lines do not correspond to transitions between any two allowed quantum states and therefore do not appear in the spectrum
The ultraviolet spectrum is 'beyond' (ultra) the violet part of the visible spectrum, that is, beyond the short end of the wavelength range. The infrared spectrum is 'within' (infra) the long end of the wavelength range. The two terms have nothing to do with color, which defines the visible spectrum between violet and red.
Light (electromagnetic radiation) forms a continuous spectrum there are no two main types.
I found two EM spectrum jokes. Whether they are good, let the reader decide:An XKCD comic about the electromagnetic spectrum (please see the related link)and this (funny?) valentine:Roses reflect a light frequency at one end of the visibleelectromagnetic spectrum,Violets reflect a light frequency at the other end of the visible electromagnetic spectrum,Sugar is C12H22O11,And you release the endorphins in my brain.
Red spectrum
spectrum of life
X-rays and Gamma rays are the two most penetrating rays in the electromagnetic spectrum.
The two main divisions of the political spectrum called in the US are called Democrats & Republicans, or the right & the left
No. It is not possible for two metals to have the same emission spectrum. For metals to have the same emission spectrum, they would need for their electrons to have duplicate orbitals. That would be impossible due to the exclusion principle.
Carbon and Tin.
The two regions of the electromagnetic spectrum are best utilized by ground based astronomers are optical and radio.
The two greatest factors of 12 are 12 and 6.
The two greatest emperors of India were Asoka and Akbar.
98
spectrum and temperature
Red & violet.