The analysis of line intensity ratios is an important tool to obtain information about laboratory and space plasmas. In emission spectroscopy, the intensity...

of plasmas can often be inferred by taking ratios of the emission intensities of various atomic spectral lines. The presence of a magnetic field splits...

Least-squares spectral analysis List of spectroscopists Metamerism (color) Operando spectroscopy Scattering theory Spectral line ratios Spectral power distribution...

Spectral line shape or spectral line profile describes the form of an electromagnetic spectrum in the vicinity of a spectral line – a region of stronger...

Line spectral pairs (LSP) or line spectral frequencies (LSF) are used to represent linear prediction coefficients (LPC) for transmission over a channel...

transmission over a channel. While not as efficient as line spectral pairs (LSPs), log area ratios are much simpler to compute. Let r k {\displaystyle r_{k}}...

endpoints of the line, colors on the line are non-spectral (no monochromatic light source can generate them). Rather, every color on the line is a unique mixture...

Henize 70 featured high SII and Hα ratios, indicating that it is not a supernova remnant. Henize 70 has spectral line ratios relatively similar to that of...

rate) or line code pulse rate. Link spectral efficiency is typically used to analyze the efficiency of a digital modulation method or line code, sometimes...

energy is finite, one may compute the energy spectral density. More commonly used is the power spectral density (PSD, or simply power spectrum), which...

intensity or power as a function of frequency or wavelength, also known as a spectral density plot. Later it expanded to apply to other waves, such as sound...

of 100% corresponds to a ratio bandwidth of 3:1. All higher ratios up to infinity are compressed into the range 100–200%. Ratio bandwidth is often expressed...

of colors interspersed with spectral lines. Each line indicates a particular chemical element or molecule, with the line strength indicating the abundance...

represent the transition from MS stars through increasing C/O ratios to SC stars. Spectral types were still listed with explicit Zr and Ti intensity values...

The hydrogen line, 21 centimeter line, or H I line is a spectral line that is created by a change in the energy state of solitary, electrically neutral...

goal of spectral density estimation (SDE) or simply spectral estimation is to estimate the spectral density (also known as the power spectral density)...

and dBrn(f1 − f2), dBrn(144-line). Noise may also be characterized by its probability distribution and noise spectral density N0(f) in watts per hertz...

identifying materials, or detecting processes. There are three general types of spectral imagers. There are push broom scanners and the related whisk broom scanners...

represent power ratios and root-power ratios, values for both are shown below. The bel is traditionally used as a unit of logarithmic power ratio, while the...

proposed them in 1916. In physics, one thinks of a spectral line from two viewpoints. An emission line is formed when an atom or molecule makes a transition...

The spectral bat (Vampyrum spectrum), also called the great false vampire bat, great spectral bat, American false vampire bat or Linnaeus's false vampire...

1.77{\overline {7}}:1} ). The intermediate ratios have no effect on the result, only the two extreme ratios. Applying the same geometric mean technique...

y1 = y2), one is enough to compute the mixing ratio. The tristimulus values for a color with a spectral radiance Le,Ω,λ are given in terms of the standard...

carrier-to-noise ratio measure denoted Eb/N0, (energy per bit to noise power spectral density ratio), or Es/N0 (energy per modulation symbol to noise spectral density)...

approach to determining a spectral luminosity class is to compare similar spectra against standard stars. Many line ratios and profiles are sensitive...

the Gaussian noise process is characterized by a known power or power spectral density. The law is named after Claude Shannon and Ralph Hartley. The Shannon–Hartley...

physics, Planck's law (also Planck radiation law: 1305 ) describes the spectral density of electromagnetic radiation emitted by a black body in thermal...

The Zeeman effect (Dutch: [ˈzeːmɑn]) is the splitting of a spectral line into several components in the presence of a static magnetic field. It is caused...

(/spɛkˈtrɒmɪtər/) is a scientific instrument used to separate and measure spectral components of a physical phenomenon. Spectrometer is a broad term often...

evaluated: it is the relative intensity noise (RIN), that is the ratio between the power spectral density of the noise current, In, measured over a given bandwidth...