Sentences with phrase «emission spectra of»

Perhaps that has been done for HITRAN's calculations of the absorption and emission spectra of different materials in the laboratory, but I think it can not have been done for its calculations of CO2's absorptions and emissions in the atmosphere because (fortunately for all life on the planet) the atmosphere can not be placed in a laboratory.

Just look at the emission spectra of N2 and O2 and compare it with the IR spectrum that Ira gives.

Evidence on the absorption / emission spectra of greenhouse gases is strong.

Skeptics do not agree about very much except a few generalities: the absorption / emission spectra of gases measured in laboratories; the laws of thermodynamics, etc..

Overtones are very weak (theory) and not seen in emission spectra of the earth measured from space or in atmospheric observations (observation).

Fluorescence absorbance and emission spectra of several bright fluorescent proteins.

According to the shapes of the emission spectra, the fluorescent proteins can be divided into two groups, i.e., Amrose v0, v2, and v4, and Amrose v1 and v3, respectively, with the emission spectra of the former three proteins revealing a broadening and red tail in comparison to the emission band of Amrose v1 and v3.

The absorption and emission maxima of the Amrose v0 — v4 variants in PBS are red shifted in comparison to eqFP615 and closely resemble the absorption and emission spectra of eqFP650 (Figure 2b, Table 1).

Now Shu et al. (p. 804) have engineered a bacteriophytochrome from Deinococcus radiodurans that incorporates biliverdin as the chromophore, to fluoresce with excitation and emission spectra of 648 and 708 nanometers, respectively.

Fussmann is now examining the light emission spectrum of the balls and plans to test whether their size and lifespan is affected by the voltage size.

His research culminated in the first observed emission spectrum of an extrasolar planet and revealed tantalizing evidence for the composition of the planet's atmosphere.

Look at the IR emission spectrum of the atmosphere from space.

Measuring with a spectrometer what is left from the radiation of a broadband infrared source (say a black body heated at 1000 °C) after crossing the equivalent of some tens or hundreds of meters of the air, shows that the main CO2 bands (4.3 µm and 15 µm) have been replaced by the emission spectrum of the CO2 which is radiated at the temperature of the trace - gas.

Second, robotic probes have measured Venus» atmosphere to be about 97 % CO2, and we can see from the image above (click for a larger version) that the absorption spectrum for CO2 (at Earth temperature and pressure — Venusian temperature and pressure increases the width of the absorption bands, making CO2 a stronger absorber in Venus» atmosphere than in Earth's) strongly overlaps the peak emission spectrum of Venus» surface.

Coincident measurements of the infrared emission spectrum of the cloudfree atmosphere at (a) 20 km looking downward over the Arctic ice sheet and (b) at the surface looking upwards.

But then you really aren't talking about the absorption / emission spectrum of your pure molecule, are you?

The cooling N2 will certainly emit photons, but those photons will fall within the emission spectrum of N2.

Not exact matches

Only the EU Emissions Trading System and the carbon price floor were opposed by a clear majority of voters from across the political spectrum, though even then it is highly doubtful that very much political capital can be gained by abolishing measures equivalent to an annual average cost of # 13 per household, (see pie chart graph).

«Synchrotron radiation is the only emission mechanism that can create the same degree of polarization and the same spectrum we observed early in the burst,» Troja said.

«Our research team has developed a simple and cost - effective fabrication technique to create solar absorbers that can harness a greater share of the solar spectrum, thus increasing their efficiencies, while also maintaining low emission levels,» said Masdar Institute's Dr. TieJun Zhang, Assistant Professor of Mechanical and Materials Engineering.

Fluorescence of Cypridina oxyluciferin is greatly enhanced when it is bound to luciferase; the spectrum is thereby shifted, so that it corresponds precisely to the emission spectrum characteristic of the bioluminescentoxidation of luciferin.

Their short durations, and strong emissions across the entire electromagnetic spectrum, require close communication, sharing of data, and collaborative efforts amongst astronomers.

The angular power spectrum of polarized dust emission at intermediate and high galactic latitudes.

Prof Atatüre says «We chose WS2 because it has higher bandgap, and we wanted to see if different materials offered different parts of the spectra for single photon emission.

Early spectral analyses of the sun's coronal emissions puzzled scientists because they could not attribute the light spectrum they found to a known chemical element.

Using the Very Large Telescope UV - Visual Echelle Spectrograph, the researchers obtained a spectrum of the star's light and looked for emissions from ionized iron, similar to those from the sun.

-- «such nanostructures deteriorate and it is impossible to alter the emission spectrum by having a nanostructure directly on the surface of the emitter.»

The researchers set out to explain earlier observations that the spectra of light from a single bubble lacked an emission linefor the molecule OHseen from multiple bubbles.

He and his colleagues focused on the K - alpha emission line of iron, visible in the spectra of many active galactic nuclei (AGN)-- the brilliant centers of these galaxies.

Beyond the wavelength coverage of the space - borne observatories, the spectra taken in Hawaii even turned up a curious new feature — a boost in emissions of unknown origin at wavelengths of about 3.3 microns.

«The backward - enhanced plasma emission spectrum from water droplets or biological agents,» they write, «could be attractive for remotely determining the composition of atmospheric aerosol.»

Illuminating the cell with a laser results in the emission of photons with a wavelength in the infrared spectrum range.

In active galaxies, a region near the center produces enormous amounts of emission across the entire electromagnetic spectrum.

The two peaks in the middle of the spectrum graph indicate the emission from the target object.

The rest goes into pulses observed elsewhere in the electromagnetic spectrum and into cosmic rays, with perhaps some going into the emission of gravitational energy, or gravity waves.

Constraining the neutrino emission of gravitationally lensed Flat - Spectrum Radio Quasars with ANTARES data

The star's optical spectrum also exhibits a number of mainly FeII and HeI emission features with profiles typical of an optically thin disk viewed edge - on.

Our IR observations show the comparatively broad emission lines, the rapid development of the spectrum to higher ionization, the early appearance of coronal lines, and the absence of dust emission, all features that indicate the hybrid nature of the nova.

Thermal emission and reflected light spectra of super Earths with flat transmission spectra.

O.G. contributed to radiative - transfer analysis of the early - time emission - line spectra.

They release radio energy in a nearly flat spectrum because of the emission of radiation by charged particles moving spirally at nearly the speed of light in a magnetic field enmeshed in the gaseous remnant.

Some, however, use a network of antennas to collect radio emissions (energy from a different portion of the electromagnetic spectrum).

See Table 1 for a summary of Rosella's excitation and emission spectra.

A number of similar black hole exploration methods have also been proposed in optical / infrared spectra so far, but one crucial problem is that emissions at these wavelengths are absorbed by interstellar dust particles although the more active black holes contain more dust particles.

Gamma Ursae Majoris is an Ae star, which is surrounded by an envelope of gas that is adding emission lines to the spectrum of the star; [21] hence the «e» suffix in the stellar classification of A0 Ve.

At higher frequencies, the intrinsic strength of the pulsar signals largely decreases as pulsar radio emission usually has a steep spectrum.

The spectrum of the radio emission has the same non-thermal (synchrotron) shape as the quasars and Seyferts.

Class W is further divided into subclasses according to the relative strength of nitrogen and carbon emission lines in their spectra (and outer layers).

A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from emission or absorption of light in a narrow frequency range, compared with the nearby frequencies.

Unlike the two slightly closer quasars that were also found in April 2001, however, the emission absorption impact of neutral hydrogen gas was detected in the spectrum of J1030 dating it to the period when the first stars and quasars formed (Fan et al, 2001; Becker et al, 2001; and Jordi Miralda - Escude, 1997).