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  2. File:United States Frequency Allocations Chart 2016 - The ...

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  3. File:Planck 2018 Linear Matter Power Spectrum.pdf - Wikipedia

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  4. Atomic spectroscopy - Wikipedia

    en.wikipedia.org/wiki/Atomic_spectroscopy

    This absorbance value can then be used to determine the concentration of a given element (or atoms) within the sample. The relationship between the concentration of atoms, the distance the light travels through the collection of atoms, and the portion of the light absorbed is given by the Beer–Lambert law .

  5. Emission spectrum - Wikipedia

    en.wikipedia.org/wiki/Emission_spectrum

    The spectrum appears in a series of lines called the line spectrum. This line spectrum is called an atomic spectrum when it originates from an atom in elemental form. Each element has a different atomic spectrum. The production of line spectra by the atoms of an element indicate that an atom can radiate only a certain amount of energy.

  6. File:GMRS and FRS Frequency Spectrum Chart.svg - Wikipedia

    en.wikipedia.org/wiki/File:GMRS_and_FRS...

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  7. Infrared spectroscopy correlation table - Wikipedia

    en.wikipedia.org/wiki/Infrared_spectroscopy...

    An infrared spectroscopy correlation table (or table of infrared absorption frequencies) is a list of absorption peaks and frequencies, typically reported in wavenumber, for common types of molecular bonds and functional groups.

  8. Template:Electromagnetic spectrum/doc - Wikipedia

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  9. Electron spectroscopy - Wikipedia

    en.wikipedia.org/wiki/Electron_spectroscopy

    Electron spectroscopy refers to a group formed by techniques based on the analysis of the energies of emitted electrons such as photoelectrons and Auger electrons.This group includes X-ray photoelectron spectroscopy (XPS), which also known as Electron Spectroscopy for Chemical Analysis (ESCA), Electron energy loss spectroscopy (EELS), Ultraviolet photoelectron spectroscopy (UPS), and Auger ...