electronic-absorption spectrum

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• Absorption spectroscopy — An overview of electromagnetic radiation absorption. This example discusses the general principle using visible light as a specific example. A white beam source – emitting light of multiple wavelengths – is focused on a sample (the complementary… …   Wikipedia

• Absorption band — An absorption band is a range of wavelengths (or, equivalently, frequencies) in the electromagnetic spectrum which are able to excite a particular transition in a substance. See absorption spectrum. Since energetic transitions can take place in… …   Wikipedia

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• Discrete spectrum — For a mathematically rigorous point of view of discrete spectrum , see decomposition of spectrum (functional analysis). In physics, an elementary (and accurate) explanation of a discrete spectrum is that it is an emission spectrum or absorption… …   Wikipedia

• Electromagnetic spectrum — The electromagnetic (EM) spectrum is the range of all possible electromagnetic radiation frequencies. [cite web|url=http://imagine.gsfc.nasa.gov/docs/dict ei.html#em spectrum|title=Imagine the Universe! Dictionary] The electromagnetic spectrum… …   Wikipedia

• Emission spectrum — The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted by the element s atoms or the compound s molecules when they are returned to a lower energy state. Each element s …   Wikipedia

• Visible spectrum — White light is dispersed by a prism into the colors of the optical spectrum. The visible spectrum is the portion of the electromagnetic spectrum that is visible to (can be detected by) the human eye …   Wikipedia

• Two-photon absorption — (TPA) is the simultaneous absorption of two photons of identical or different frequencies in order to excite a molecule from one state (usually the ground state) to a higher energy electronic state. The energy difference between the involved… …   Wikipedia

• Renner-Teller effect — The Renner Teller effect is an effect due to rovibronic coupling on the electronic spectra of three (or more) atomic linear molecules in degenerate electronic (Π, Δ, ..., etc.) states.In its original formulation, the Renner Teller effect was a… …   Wikipedia

• Chromium(II) acetate — IUPAC name Chromium(II) acetate hydrate …   Wikipedia