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searching for Emission spectrum 103 found (215 total)

alternate case: emission spectrum

Sunlight (5,424 words) [view diff] no match in snippet view article find links to article

Sunlight is a portion of the electromagnetic radiation given off by the Sun, in particular infrared, visible, and ultraviolet light. On Earth, sunlight
Laser dye (260 words) [view diff] exact match in snippet view article find links to article
are dozens of laser dyes that can be used to span continuously the emission spectrum from the near ultraviolet to the near infrared. Laser dyes are also
Spectrofluorometer (324 words) [view diff] exact match in snippet view article find links to article
performed to record the intensity versus wavelength, also called an emission spectrum. The instrument is used in fluorescence spectroscopy. Generally, spectrofluorometers
BH Crucis (573 words) [view diff] exact match in snippet view article find links to article
emission becoming more prominent. Technetium was also recorded in the emission spectrum and its surface temperature deemed to have cooled to 3000 K. Unusually
IAEDANS (157 words) [view diff] exact match in snippet view article find links to article
with thiols. The absorption spectrum IAEDANS overlaps well with the emission spectrum of tryptophan, making it useful as an acceptor in FRET experiments
BL Lacertae object (964 words) [view diff] exact match in snippet view article find links to article
the relativistic jet directed at the observer giving a unique radio emission spectrum. This includes BL Lacs as well as optically violent variable (OVV)
Ionized-air glow (1,447 words) [view diff] exact match in snippet view article find links to article
ionized oxygen (OII) are the most prominent features of a lightning emission spectrum. Neutral nitrogen radiates primarily at one line in red part of the
Solvatochromism (669 words) [view diff] exact match in snippet view article find links to article
changes as the solvent changes. This is reflected in the absorption or emission spectrum of the solute as differences in the position, intensity, and shape
Photometric redshift (506 words) [view diff] exact match in snippet view article find links to article
determined by calculating the expected observed data from a known emission spectrum at a range of redshifts. The technique relies upon the spectrum of
Deuterium arc lamp (692 words) [view diff] exact match in snippet view article find links to article
Emission spectrum of an ultraviolet deuterium arc lamp showing characteristic hydrogen Balmer lines (sharp peaks at 486 nm and 656 nm labeled Dβ and Dα
Frosty Leo Nebula (725 words) [view diff] exact match in snippet view article find links to article
circumstellar outflow in which crystalline ice dominates the long-wavelength emission spectrum and the only known PPN with point-reflection-symmetric deviations
Beta decay (6,748 words) [view diff] no match in snippet view article find links to article
In nuclear physics, beta decay (β-decay) is a type of radioactive decay in which a beta particle (fast energetic electron or positron) is emitted from
Hydroxy group (515 words) [view diff] exact match in snippet view article find links to article
also reported in 2009 that the LCROSS probe revealed an ultraviolet emission spectrum consistent with hydroxyl presence. The Venus Express orbiter sent
Peak kilovoltage (591 words) [view diff] exact match in snippet view article find links to article
and is proportional to the maximum energy of the resulting X-ray emission spectrum. In early and basic x-ray equipment, the applied voltage varies cyclically
Balmer series (1,296 words) [view diff] exact match in snippet view article find links to article
The "visible" hydrogen emission spectrum lines in the Balmer series. H-alpha is the red line at the right. Four lines (counting from the right) are formally
Wavelength shifter (384 words) [view diff] exact match in snippet view article find links to article
broad enough to create an absorption and emission spectrum. The separation between absorption and emission spectrum is defined by the so-called Stokes shift
Thermal radiation (5,203 words) [view diff] exact match in snippet view article find links to article
practical device designs. Another way to modify the object thermal emission spectrum is by reducing the dimensionality of the emitter itself. This approach
R136c (748 words) [view diff] exact match in snippet view article find links to article
products to the surface and these create a powerful stellar wind and emission spectrum normally only seen in highly evolved stars. Its fate depends on the
Fluorescence image-guided surgery (1,371 words) [view diff] exact match in snippet view article find links to article
the sample. Light is collected using optical filters that match the emission spectrum of the fluorophore. Imaging lenses and digital cameras (CCD or CMOS)
NGC 3603 (1,093 words) [view diff] exact match in snippet view article find links to article
as nebulous or multiple. It was also noted for having an unusual emission spectrum and the spectral type was given as Oe in the Henry Draper Catalogue
Wavenumber (1,384 words) [view diff] exact match in snippet view article find links to article
frequency or energy. For example, the spectroscopic wavenumbers of the emission spectrum of atomic hydrogen are given by the Rydberg formula: ν ~ = R ( 1 n
Actinometer (601 words) [view diff] exact match in snippet view article find links to article
measurements in wider spectral ranges can be done with this chemical if the emission spectrum of the light source is known. Michels, John (April 25, 1884). "Notes
Galactic halo (1,124 words) [view diff] exact match in snippet view article find links to article
from the center of the galaxy. It can be detected by the distinct emission spectrum it gives off, showing the presence of HI gas (H one, 21 cm microwave
Gamma ray (6,880 words) [view diff] exact match in snippet view article find links to article
Np ; which is followed by gamma emission. In some cases, the gamma emission spectrum of the daughter nucleus is quite simple, (e.g. 60 Co /60 Ni ) while
R136a1 (5,060 words) [view diff] exact match in snippet view article find links to article
massive luminous stars still burning hydrogen at their cores. The emission spectrum is produced in a powerful dense stellar wind, and the enhanced levels
Coherence length (654 words) [view diff] exact match in snippet view article find links to article
In optical communications, assuming that the source has a Gaussian emission spectrum, the coherence length L {\displaystyle L} is given by L = 1 2 L F
Potrzebie (1,038 words) [view diff] exact match in snippet view article find links to article
standardization in terms of the wavelength of the red line of the emission spectrum of cadmium is also given, which if the 1927 definition of the Ångstrom
Double beta decay (3,379 words) [view diff] exact match in snippet view article find links to article
beta decay is allowed. The emission spectrum of the two electrons can be computed in a similar way to beta emission spectrum using Fermi's Golden Rule
Antonino Lo Surdo (183 words) [view diff] exact match in snippet view article find links to article
Johannes Stark) in 1913 of the effect on an electric field on the emission spectrum of a gas. This physical phenomenon is called the Stark-Lo Surdo effect
Bacteriorhodopsin (1,075 words) [view diff] exact match in snippet view article find links to article
470 nm and 650 nm (with a peak at 570 nm). When pumped at 633 nm, the emission spectrum has appreciable intensity between 650 nm and 850 nm. Bacteriorhodopsin
Fluorescent chloride sensors (749 words) [view diff] exact match in snippet view article find links to article
contains four point mutations and has a red-shifted excitation and emission spectrum compared with GFP. YFP fluorescence is sensitive to various small
Alexa Fluor (1,109 words) [view diff] exact match in snippet view article find links to article
Fluor family by addion of new dyes to fill gaps not covered in the emission spectrum.[citation needed] In 2008, Invitrogen and the Alexa Fluor product
H-alpha (829 words) [view diff] exact match in snippet view article find links to article
The four visible hydrogen emission spectrum lines in the Balmer series. The red line at far-right is H-alpha
Starlight (1,689 words) [view diff] exact match in snippet view article find links to article
to be composed of three main spectra types, continuous spectrum, emission spectrum, and absorption spectrum. Starlight illuminance coincides with the
Beryllium hydride (804 words) [view diff] case mismatch in snippet view article find links to article
Keith Tereszchuk; Reginald Colin (2002). "The Vibration-Rotation Emission Spectrum of Free BeH2". Science. 297 (5585): 1323–1324. Bibcode:2002Sci...297
Wien approximation (828 words) [view diff] no match in snippet view article find links to article
displacement law Wien, W. (1897). "On the division of energy in the emission-spectrum of a black body" (PDF). Philosophical Magazine. Series 5. 43 (262):
HD 209458 (678 words) [view diff] exact match in snippet view article find links to article
Travis Barman at Lowell Observatory in Flagstaff, Arizona analyzed the emission spectrum of this planet, and believes that its atmosphere contains water, although
SOLRAD 7A (1,073 words) [view diff] exact match in snippet view article find links to article
Å) and the low-frequency portion of the solar hydrogen Lyman-alpha emission spectrum (1225 to 1350 Å), and to transmit measurements back to Earth. Launched
Glow stick (2,077 words) [view diff] exact match in snippet view article find links to article
fluorophore would degrade in solution or be attacked by the chemicals. The emission spectrum of the first fluorophore and the absorption spectrum of the second
Landau–Pomeranchuk–Migdal effect (398 words) [view diff] exact match in snippet view article find links to article
by Bethe–Heitler. The suppression occurs in different parts of the emission spectrum, for quantum electrodynamics (QED) small photon energies are suppressed
Fluorapatite (979 words) [view diff] exact match in snippet view article find links to article
manganese-II produced a second broad peak to appear at the red end of the emission spectrum at the expense of the antimony peak, excitation energy being transferred
Doppler spectroscopy (2,236 words) [view diff] exact match in snippet view article find links to article
finding planets around these types of stars, as changes in the stellar emission spectrum caused by the intrinsic variability of the star can swamp the small
B-type main-sequence star (1,349 words) [view diff] exact match in snippet view article find links to article
types B7-B9. Finally, the aforementioned Be stars show a prominent emission spectrum of hydrogen. B-type stars known to have planets include the main-sequence
Sungrazing comet (2,420 words) [view diff] case mismatch in snippet view article find links to article
718P. doi:10.1086/149049. Slaughter, C. D. (September 1969). "The Emission Spectrum of Comet Ikeya-Seki 1965-f at Perihelion Passage". The Astronomical
Flare (countermeasure) (1,931 words) [view diff] exact match in snippet view article
counter-countermeasures), the modernized decoy flares have their emission spectrum optimized to also match the radiation of the airplane (mainly its
V1309 Scorpii (1,808 words) [view diff] exact match in snippet view article find links to article
a narrow absorption spectrum from this dense region and a broader emission spectrum surrounding it. The incline of this equatorial plane from the observer's
Diode-pumped solid-state laser (1,530 words) [view diff] exact match in snippet view article find links to article
diode pump sources, which serve to narrow and stabilize the pump emission spectrum to keep it closely aligned to this absorption feature. To date, high
Fast Ethernet (2,448 words) [view diff] exact match in snippet view article find links to article
feedback shift register. This is needed to flatten the bandwidth and emission spectrum of the signal, as well as to match transmission line properties. The
Electromagnetic radiation (10,412 words) [view diff] exact match in snippet view article find links to article
which the light travels determines the nature of the absorption and emission spectrum. These bands correspond to the allowed energy levels in the atoms
Fluorescence (9,342 words) [view diff] exact match in snippet view article find links to article
many fluorophores the absorption spectrum is a mirror image of the emission spectrum. This is known as the mirror image rule and is related to the Franck–Condon
Superluminescent diode (3,114 words) [view diff] exact match in snippet view article find links to article
sometimes even lead to parasitic lasing, causing narrow spikes in the emission spectrum. Some devices may even be damaged by optical feedback. Note that the
Fluorophore (1,686 words) [view diff] exact match in snippet view article find links to article
narrow or broader band, or it may be all beyond a cutoff level. The emission spectrum is usually sharper than the excitation spectrum, and it is of a longer
Particle-induced X-ray emission (1,012 words) [view diff] exact match in snippet view article find links to article
Three types of spectra can be collected from a PIXE experiment: X-ray emission spectrum. Rutherford backscattering spectrum. Proton transmission spectrum
Judd–Ofelt theory (392 words) [view diff] exact match in snippet view article find links to article
radiative lifetimes, and estimates of quantum efficiencies) from the emission spectrum of Eu3+ doped compounds, can be obtained by the JOES application software
Wien's displacement law (2,395 words) [view diff] exact match in snippet view article find links to article
shorter and shorter wavelengths come to predominate the black body emission spectrum. Before it had even reached the red hot temperature, the thermal emission
Tris(bipyridine)ruthenium(II) chloride (1,238 words) [view diff] exact match in snippet view article
Absorption and emission spectrum of [Ru(bpy)3]2+ in alcoholic solution at room temperature
Pierre Janssen (1,279 words) [view diff] exact match in snippet view article find links to article
up a new, relatively powerful spectroscope. He also observed the emission spectrum of the chromosphere, including the same yellow line. Within a few
Planck constant (6,145 words) [view diff] exact match in snippet view article find links to article
no expression or explanation for the overall shape of the observed emission spectrum. At the time, Wien's law fit the data for short wavelengths and high
Blacklight (3,345 words) [view diff] exact match in snippet view article find links to article
material in the bulb. Plain glass blocks out less of the visible mercury emission spectrum, making them appear light blue-violet to the naked eye. These lamps
Californium (4,544 words) [view diff] case mismatch in snippet view article find links to article
2012. Conway, J. G.; Hulet, E.K.; Morrow, R.J. (February 1, 1962). "Emission Spectrum of Californium". Journal of the Optical Society of America. 52 (2):
Oxidation state (11,047 words) [view diff] case mismatch in snippet view article find links to article
Zhang, K.-Q.; Bernath, P.F.; et al. (1996). "High-Resolution Infrared Emission Spectrum of Strontium Monofluoride" (PDF). Journal of Molecular Spectroscopy
Georges Urbain (1,143 words) [view diff] exact match in snippet view article find links to article
In 1922, he announced his new element, fully characterizing its emission spectrum, but mistakenly identifying it as a rare earth. George de Hevesy and
Remote control (4,190 words) [view diff] exact match in snippet view article find links to article
The emission spectrum of a typical sound system remote control is in the near infrared.
Neodymium(III) chloride (2,455 words) [view diff] exact match in snippet view article
not only act as LEDs, but also as color filters improving the LED emission spectrum. Solubility of neodymium(III) chloride (and other rare-earth salts)
Fine structure (3,172 words) [view diff] exact match in snippet view article find links to article
Details in the emission spectrum of an atom
Indium (5,116 words) [view diff] exact match in snippet view article find links to article
sometimes contain thallium, they searched for the green thallium emission spectrum lines. Instead, they found a bright blue line. Because that blue line
Chemistry (9,109 words) [view diff] exact match in snippet view article find links to article
Emission spectrum of iron
Strontium (5,754 words) [view diff] case mismatch in snippet view article find links to article
; Zhang, K.-Q.; Bernath, P. F. (1996). "High-Resolution Infrared Emission Spectrum of Strontium Monofluoride" (PDF). J. Molecular Spectroscopy. 175 (1):
Emissivity (2,125 words) [view diff] exact match in snippet view article find links to article
energy radiated increases with temperature while the peak of the emission spectrum shifts to shorter wavelengths. The energy emitted at shorter wavelengths
Flow cytometry (5,474 words) [view diff] exact match in snippet view article find links to article
spectrum overlap. This situation needs to be overcome. For example, the emission spectrum for FITC and PE is that the light emitted by the fluorescein overlaps
Fluorescence in the life sciences (2,394 words) [view diff] exact match in snippet view article find links to article
fluorophore, which has an excitation spectrum which overlaps with the emission spectrum of the donor dye resulting in a reduced fluorescence. This can be
SOLRAD 7B (970 words) [view diff] exact match in snippet view article find links to article
Å) and the low-frequency portion of the solar hydrogen Lyman-alpha emission spectrum (1225 to 1350 Å), and to transmit measurements back to earth. To that
Luminescent solar concentrator (2,352 words) [view diff] exact match in snippet view article find links to article
the output. The sensitivity of solar cells must match the maximal emission spectrum of the luminescent colorants. Increase the probability of transition
Hydrogen (10,424 words) [view diff] exact match in snippet view article find links to article
Hydrogen emission spectrum lines in the visible range. These are the four visible lines of the Balmer series
Active galactic nucleus (5,911 words) [view diff] case mismatch in snippet view article find links to article
3: 59. Bibcode:1917LowOB...3...59S. Humason, M. L. (1932). "The Emission Spectrum of the Extra-Galactic Nebula N. G. C. 1275". Publications of the Astronomical
Scanning electron microscope (7,871 words) [view diff] exact match in snippet view article find links to article
can analyse the wavelengths emitted by the specimen and display an emission spectrum or an image of the distribution of cathodoluminescence emitted by
Term symbol (5,560 words) [view diff] exact match in snippet view article find links to article
somewhat odd notation; it is an old notation made to attempt to fit an emission spectrum of neon to a hydrogen-like theory. It has a rather simple structure
Xenon monochloride (22,316 words) [view diff] exact match in snippet view article find links to article
emissions are more or less degraded for short wavelengths as the emission spectrum of the (B→X) line shows in figure 13. A corresponding oscillation
Diargon (1,688 words) [view diff] exact match in snippet view article find links to article
org/10.1016/0022-4073(80)90052-7 Volume 71, Issue 4 > 10.1063/1.438529 Emission spectrum of rare gas dimers in the vacuum UV region. II. Rotational analysis
Eta Carinae (14,402 words) [view diff] exact match in snippet view article find links to article
material initially radiates like a pseudo-photosphere and then the emission spectrum develops as it expands and thins. The emission line spectrum associated
Roberta M. Humphreys (1,080 words) [view diff] case mismatch in snippet view article find links to article
of Eta Carinae 1892 to 1941 and the Onset of its High Excitation Emission Spectrum (with K. Davidson, M. Koppelman) The Astronomical Journal (2008) The
White light interferometry (2,314 words) [view diff] exact match in snippet view article find links to article
assumes that the dominant contribution to the coherence length is the emission spectrum. In Figure 4, you can see the spectral density function for a Gaussian
Ball lightning (9,081 words) [view diff] exact match in snippet view article find links to article
The emission spectrum (intensity vs. wavelength) of a natural ball lightning
Blue (15,154 words) [view diff] exact match in snippet view article find links to article
pigment discovered in 2008 by Mas Subramanian and Andrew E. Smith. Emission spectrum of Cu2+ Electronic spectrum of aqua-ions Cu(H 2O)2+ 6 Of the colours
Resistive opto-isolator (4,768 words) [view diff] exact match in snippet view article find links to article
of the LED is nearly proportional to the controlling current. The emission spectrum depends on the temperature of LED, and thus on the current, but this
Thermophotovoltaic (4,790 words) [view diff] exact match in snippet view article find links to article
absorbance characteristics of a particular PV cell. The peak of the emission spectrum occurs at 1.29 eV for Yb2O3 and 0.827 eV for Er2O3. As a result, Yb2O3
Nitrogen-vacancy center (5,474 words) [view diff] exact match in snippet view article find links to article
(~12 ns ) of the N-V center and the strong phonon sideband in its emission spectrum. Both issues can be addressed by putting the N-V center in an optical
Rabi cycle (4,017 words) [view diff] exact match in snippet view article find links to article
electromagnetic wave of same frequency. Consequently, this frequency must appear in the absorption and emission spectrum of Ionized hydrogen molecule.
OLED (14,626 words) [view diff] exact match in snippet view article find links to article
and consume little power at the same time. This is done by using an emission spectrum with high human-eye sensitivity, special color filters with a low
Small molecule sensors (2,003 words) [view diff] exact match in snippet view article find links to article
transfer of an exciton from a donor to an acceptor, modulating the emission spectrum. Excimer/Exciplex formation, the formation of a state that is a hybrid
Reciprocity (optoelectronic) (1,878 words) [view diff] exact match in snippet view article
injection will lead to recombination and consequently light emission. The emission spectrum of the luminescence emitted in the situation on the right is directly
FMN-binding fluorescent protein (1,460 words) [view diff] exact match in snippet view article find links to article
Typical excitation and emission spectrum of FMN-binding fluorescent proteins (FbFPs)
Microplasma (4,725 words) [view diff] exact match in snippet view article find links to article
nitrogen gas within the handpiece. The plasma generated has an optical emission spectrum with peaks in the visible range (mainly indigo and violet) and near-infrared
Boron monofluoride monoxide (2,056 words) [view diff] exact match in snippet view article find links to article
doi:10.1021/j100017a039. Mathews, C.Weldon (January 1966). "The 4465-Å emission spectrum of the BOF2 molecule". Journal of Molecular Spectroscopy. 19 (1–4):
Solid state ionics (3,204 words) [view diff] exact match in snippet view article find links to article
Nernst lamp could operate in air and was twice more efficient as its emission spectrum was closer to that of daylight. AEG, a lighting company in Berlin
Glossary of astronomy (13,813 words) [view diff] exact match in snippet view article find links to article
star by observing its motion through space, its luminosity, and its emission spectrum. star catalogue star cluster star system Any small number of stars
Timeline of quantum mechanics (10,429 words) [view diff] exact match in snippet view article find links to article
Kirchhoff introduces the concept of a blackbody and proves that its emission spectrum depends only on its temperature. 1860-1900 – Ludwig Eduard Boltzmann
Space Solar Power Exploratory Research and Technology program (1,659 words) [view diff] exact match in snippet view article find links to article
optimal absorption at their bandgaps throughout the solar energy emission spectrum. Theoretical efficiencies were in the range of 50–70%. The arrays
Discovery of the neutron (8,150 words) [view diff] exact match in snippet view article find links to article
with the visiting Bohr. The model accounted for the electromagnetic emission spectrum from the hydrogen atom, and Moseley and Bohr wondered if the electromagnetic
Nancy Houk (2,239 words) [view diff] exact match in snippet view article find links to article
257 = NRC No. 14911. Cowley, A. P.; Houk, N., The rapidly varying emission spectrum of HD 158503. 1976 Astronomical Journal, Volume.81, p. 116, Houk,
List of German inventions and discoveries (17,582 words) [view diff] no match in snippet view article find links to article
ISBN 978-0470576649. Wien, W. (1897). "On the division of energy in the emission-spectrum of a black body". Philosophical Magazine. 43 (262): 214–220. doi:10
Fluorescent glucose biosensor (7,450 words) [view diff] exact match in snippet view article find links to article
fluorophore, which has an excitation spectrum that overlaps with the emission spectrum of the donor dye, resulting in a reduced fluorescence. For sensing
Light-emitting diode physics (3,296 words) [view diff] exact match in snippet view article find links to article
color options and better color rendering than white LEDs since the emission spectrum is much narrower, characteristic of quantum confined states. There