Sentences with phrase «absorption lines over»

Doppler RV is measured through monitoring interference fringe shifts of stellar absorption lines over a broad band.

Not exact matches

«However, when bacteria invades and takes over the small intestine, it can lead to poor nutrient absorption, symptoms commonly associated with IBS, and may even lead to damage of the stomach lining.»

Over time, this reaction damages your small intestine's lining and prevents absorption of some nutrients (malabsorption).

A simple example is the radiation code — instead of using a line - by - line code which would resolve the absorption at over 10,000 individual wavelengths, a GCM generally uses a broad - band approximation (with 30 to 50 bands) which gives very close to the same results as a full calculation.

The line broadenning takes some optical thickness from the line centers and puts it into gaps between closely - spaced lines, so that there can be significant absorption over a contiuous band of wavelengths.

Generally, absorption lines in the absence of any line - broadenning, would absorb over an infinitesimal portion of the spectrum, and saturate (ie reduce the photon travel distances to a scale where there is very little temperature variation) relatively more quickly.

EWF is a density over distance along a line (in the absence of scattering, etc.) or lines (when partial specular reflection occurs), or a density over volume (when scattering contributes to the CSD), where the sum over all space = 1; it matches the distribution over space of the absorption of a unit amount of radiation incident at L from the opposite direction.

I have argued that escape is favored over return to surface, since higher layers are colder and lower density, and so must exhibit narrower GHG absorption lines; while lower layers must have broader absorption lines; so recapture is more likely going down than going up.

If one were to take the model and plot a curve of emission versus wavelength rather than simply summing up the values (integrating over wavelength), it would show a spectral curve of a black body at 288.2 k with the absorption lines of the atmosphere dipping down to the point where there is a spectral curve for a lower temperature at which there is emission going on in the wavelength bands associated with ghg absorption.

Yes at the line center the absorption of CO2 is «saturated: — surface emission totally replaced by emission from the top of the ghg column but as the conc of the ghg increases, the line width increases so the ghg starts to absorb over a greater and greater range of wavelengths — this is the cause of the logarithmic relationship between concentration and absorption.

«Abstract - Over 5000 absolute absorption values for pressure - broadened O2 lines in dry air were measured at frequencies from 49 to 67 GHz in O.l - GHz - increments.