News tagged with spectroscopy

New study sheds light on genetics of rice metabolism

A large-scale study analyzing metabolic compounds in rice grains conducted by researchers at the RIKEN Plant Science Center (PSC) and their collaborators has identified 131 rice metabolites and clarified the ...

Biology / Biotechnology

created Feb 08, 2012 | popularity not rated yet | comments 0

First-of-its-kind head patch monitors brain blood flow and oxygen

A research team led by investigators at Mayo Clinic in Florida has found that a small device worn on a patient's brow can be useful in monitoring stroke patients in the hospital. The device measures blood oxygen, similar ...

Medicine & Health / Cardiology

created Feb 01, 2012 | popularity not rated yet | comments 0

Researchers at SLAC test collider closer to creating fully coherent X-rays

(PhysOrg.com) -- Many advanced laser technologies, such as laser spectroscopy, that use precise wavelengths of infrared, visible or ultraviolet laser light could benefit from using X-ray light as well. But ...

Physics / General Physics

created Feb 01, 2012 | popularity 5 / 5 (3) | comments 0 | with audio podcast

A step closer to understanding, averting drug resistance

(Medical Xpress) -- The multidrug transporter EmrE functions as an asymmetric antiparallel dimer (molecule with two subunits). Drug (blue) transport from the inside to the outside of the cell membrane is accomplished ...

Medicine & Health / Research

created Jan 31, 2012 | popularity not rated yet | comments 0 | with audio podcast

Diagnostic brain tumor test could revolutionize care of patients

Researchers at UT Southwestern Medical Center have developed what they believe to be the first clinical application of a new imaging technique to diagnose brain tumors. The unique test could preclude the need ...

Medicine & Health / Cancer

created Jan 27, 2012 | popularity 5 / 5 (1) | comments 0 | with audio podcast

Researchers publish new findings on aging pediatric bruises

A multi-university research group which includes several University of Notre Dame faculty and graduate students, has recently published a paper detailing new work on the analysis and dating of human bruises. The research, ...

Medicine & Health / Research

created Jan 26, 2012 | popularity not rated yet | comments 0

12 new flavonoids discovered in Kew tree

Scientists at Kew interested in the classification of legumes have been studying the chemistry of the Kentucky yellow-wood (Cladrastis kentukea). Evidence from DNA sequencing suggested that this species is ...

Chemistry / Biochemistry

created Jan 10, 2012 | popularity 5 / 5 (1) | comments 0

The next big step toward atom-specific dynamical chemistry

(PhysOrg.com) -- For Ali Belkacem of Berkeley Lab’s Chemical Sciences Division, “What is chemistry?” is not a rhetorical question.

Chemistry / Analytical Chemistry

created Jan 06, 2012 | popularity 5 / 5 (8) | comments 0 | with audio podcast

The interplay of dancing electrons

Negative ions play an important role in everything from how our bodies function to the structure of the universe. Scientists from the University of Gothenburg, Sweden, have now developed a new method that makes it possible ...

Physics / General Physics

created Nov 29, 2011 | popularity 4 / 5 (4) | comments 0

Growth hormone increases bone formation in obese women

In a new study presented today at the annual meeting of the Radiological Society of North America (RSNA), growth hormone replacement for six months was found to increase bone formation in abdominally obese women.

Medicine & Health / Research

created Nov 29, 2011 | popularity not rated yet | comments 0

Physicists find charge separation in a molecule consisting of two identical atoms

Physicists from the University of Stuttgart show the first experimental proof of a molecule consisting of two identical atoms that exhibits a permanent electric dipole moment. This observation contradicts ...

Physics / General Physics

created Nov 25, 2011 | popularity 4.6 / 5 (22) | comments 7 | with audio podcast

Nanoparticles harvest invisible cancer biomarkers

(PhysOrg.com) -- Cancer biologists have long presumed that tumor cells shed telltale markers into the blood and that finding these blood-borne biomarkers could provide an early indicator that cancer is developing somewhere ...

Nanotechnology / Bio & Medicine

created Nov 22, 2011 | popularity 5 / 5 (1) | comments 0 | with audio podcast

How atoms behave: Characteristics of microstructural avalanches

(PhysOrg.com) -- Investigating how atoms move and rearrange themselves is fundamental to our understanding of the behavior of materials, in particular efforts aimed at engineering materials with enhanced functionality. ...

Physics / General Physics

created Nov 18, 2011 | popularity 5 / 5 (1) | comments 1 | with audio podcast

In nitrogenase - enzyme critical for life, X-ray emission cracks mystery atom

Like a shadowy character just hidden from view, a mystery atom in the middle of a complex enzyme called nitrogenase had long hindered scientists' ability to study the enzyme fully.

Chemistry / Materials Science

created Nov 17, 2011 | popularity 5 / 5 (1) | comments 1 | with audio podcast

Exploring the last white spot on Earth: ESRF inaugurates unique new X-ray facility

Scientists will soon be exploring matter at temperatures and pressures so extreme it can only be produced for microseconds using powerful pulsed lasers. Matter in such states is present in the Earth's liquid ...

Physics / General Physics

created Nov 10, 2011 | popularity not rated yet | comments 0

Spectroscopy

Spectroscopy was originally the study of the interaction between radiation and matter as a function of wavelength (λ). In fact, historically, spectroscopy referred to the use of visible light dispersed according to its wavelength, e.g. by a prism. Later the concept was expanded greatly to comprise any measurement of a quantity as function of either wavelength or frequency. Thus it also can refer to a response to an alternating field or varying frequency (ν). A further extension of the scope of the definition added energy (E) as a variable, once the very close relationship E = for photons was realized (h is the Planck constant). A plot of the response as a function of wavelength—or more commonly frequency—is referred to as a spectrum; see also spectral linewidth.

Spectrometry is the spectroscopic technique used to assess the concentration or amount of a given species. In those cases, the instrument that performs such measurements is a spectrometer or spectrograph.

Spectroscopy/spectrometry is often used in physical and analytical chemistry for the identification of substances through the spectrum emitted from or absorbed by them.

Spectroscopy/spectrometry is also heavily used in astronomy and remote sensing. Most large telescopes have spectrometers, which are used either to measure the chemical composition and physical properties of astronomical objects or to measure their velocities from the Doppler shift of their spectral lines.

For more information about Spectroscopy, read the full article at Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.