Spectroscopy ( for example ) determines what chemical elements a star is composed of.

Spectroscopy is also used in the determination of the distance of a star, using the red shift.

Spectroscopy is the related sub-discipline of physical chemistry which is specifically concerned with the interaction of electromagnetic radiation with matter.

Spectroscopy () is the study of the interaction between matter and radiated energy.

Spectroscopy is used in physical and analytical chemistry because atoms and molecules have unique spectra.

Spectroscopy is also used in astronomy and remote sensing.

The primary example is " FTIR Spectroscopy ", a common technique in chemistry.

In the case of Ultraviolet Photoelectron Spectroscopy ( UPS ), the surface of a solid sample is irradiated with ultraviolet ( UV ) light and the kinetic energy of the emitted electrons is analysed.

Originally known as the High Throughput X-ray Spectroscopy Mission it was placed in a very eccentric 48 hour elliptical orbit at 40 °; at its apogee it is nearly from Earth, while the perigee is only

Spectroscopy has been used successfully for online monitoring of manufacturing processes for 30 – 40 years, and this process data is highly amenable to chemometric modeling.

The IAC's OSIRIS ( Optical System for Imaging and low Resolution Integrated Spectroscopy ), is an " imaging and low resolution spectrograph with longslit and multiobject spectroscopic modes.

It is possible to add energy to the spin system using radio frequency ( RF ) techniques ( Spectroscopy with coherent radiation: selected papers of Norman F. Ramsey with commentary.

or by electronic locking., as for example is done in the Noise-Immune Cavity-Enhanced Optical-Heterodyne Molecular Spectroscopy ( NICE-OHMS ) technique.

Outside the field of analytical chemistry, e. g. when used with the Tunable Diode Laser Absorption Spectroscopy ( TDLAS ) technique, the absorbance is often defined using the natural logarithm instead of the common logarithm, i. e. as

Atomic Fluorescence Spectroscopy ( AFS ) techniques are useful in other kinds of analysis / measurement of a compound present in air or water, or other media, such as CVAFS which is used for heavy metals detection, such as mercury.

Time-resolved Photoemmision Spectroscopy is an important extension to Photoemission spectroscopy.

Spectroscopy has revealed that Sedna's surface composition is similar to that of some other trans-Neptunian objects, being largely a mixture of water, methane and nitrogen ices with tholins.

Siegbahn referred to the technique as Electron Spectroscopy for Chemical Analysis ( ESCA ), since the core levels have small chemical shifts depending on the chemical environment of the atom which is ionized, allowing chemical structure to be determined.

The Collinear Fast-Beam Laser Spectroscopy ( CFBS ) experiment at TRIUMF is designed to exploit the high beam-intensity and radioisotope-production capability of TRIUMF ’ s ISAC facility, as well as modern ion-trap beam-cooling techniques, in order to measure the hyperfine energy levels and isotope shifts of short-lived isotopes using laser spectroscopy.

Spectroscopy is the study of the interaction between radiation ( electromagnetic radiation, or light, as well as particle radiation ) and matter.

An important contribution to the field of Spectroscopy and Radiative Transfer was his prediction of the phenomenon called Dicke narrowing ( aka collisional narrowing ): When the mean free path of an atom is much smaller than the wavelength of one of its radiation transitions, the atom changes velocity and direction many times during the emission or absorption of a photon.

In recognition of his many significant accomplishments in the field of analytical chemistry and computer science, he received the Honorary Membership Award of the Society for Applied Spectroscopy in 1996, the Williams-Wright Award from the Coblentz Society in 1986.

In 1952, he served as advisor to the Joint Commission for Spectroscopy, the head body for this field.

Spectroscopy consists of many different applications such as atomic absorption spectroscopy, atomic emission spectroscopy, ultraviolet-visible spectroscopy, x-ray fluorescence spectroscopy, infrared spectroscopy, Raman spectroscopy, dual polarisation interferometry, nuclear magnetic resonance spectroscopy, photoemission spectroscopy, Mössbauer spectroscopy and so on.

Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, but also their motion by Doppler shift measurements.

By 1915, the subject of Stellar Spectroscopy had garnered substantial attention so that many scientists were devoting their efforts to discern its mysteries.

Spectroscopy measures the interaction of the molecules with electromagnetic radiation.

Spectroscopy does not generally refer to diffraction studies where particles such as neutrons, electrons, or high energy X-rays interact with a regular arrangement of molecules ( as in a crystal ).

* Ellis R. Lippincott Award, recognizes contributions to vibrational spectroscopy ( co-sponsored with the Coblentz Society and the Society for Applied Spectroscopy ).

Schawlow coauthored Microwave Spectroscopy ( 1955 ) with Charles Townes.

ATLAS-1 instruments were: Atmospheric Trace Molecule Spectroscopy ( ATMOS ); Grille Spectrometer ; Millimeter Wave Atmospheric Sounder ( MAS ); Imaging Spectrometric Observatory ( ISO ); Atmospheric Lyman-Alpha Emissions ( ALAE ); Atmospheric Emissions Photometric Imager ( AEPI ); Space Experiments with Particle Accelerators ( SEPAC ); Active Cavity Radiometer ( ACR ); Measurement of Solar Constant ( SOLCON ); Solar Spectrum ( SOLSPEC ); Solar Ultraviolet Spectral Irradiance Monitor ( SUSIM ); and Far Ultraviolet Space Telescope ( FAUST ).

ATLAS-3 instruments, mounted on a Spacelab pallet in the cargo bay, included Atmospheric Trace Molecule Spectroscopy ( ATMOS ), which collected more data on trace gases in the atmosphere than on all three of its previous flights combined ; Shuttle Solar Backscatter Ultraviolet Spectrometer ( SSBUV ), which took ozone measurements to calibrate ozone monitor on aging NOAA-9 satellite as well as cooperative measurements with other ATLAS-3 instruments ; Active Cavity Radiometer Irradiance Monitor ( ACRIM ), which took extremely precise measurements of the sun's total radiation for 30 orbits as calibration reference for sister instrument on Upper Atmosphere Research Satellite ( UARS ) launched in 1991 ; Measurement of the Solar Constant ( SOLCON ), provided by Belgium, which also measured solar radiation but as reference point to track changes over years ; Solar Spectrum Measurement ( SOLSPEC ), French instrument, measured sun's radiation as function of wavelength ; and Solar Ultraviolet Spectral Irradiance Monitor ( SUSIM ), which collected its highest precision solar ultraviolet radiation measurements in its 15-year lifetime.

* Spectroscopy, based on the differental interaction of the analyte along with electromagnetic radiation ;

In the 1990s, Somorjai started working with physicist Y. R. Shen on developing a technique known as Sum Frequency Generation Spectroscopy to study surface reactions without the need for a vacuum chamber.

His books include Nuclear Magnetic Resonance ( NMR ) in biochemistry-application to enzyme systems ( OUP, 1973 ), Principles and Problems in Physical Chemistry for Biochemists, with N C Price ( OUP, 1974 ) and Biology Spectroscopy with I D Campbell ( Benjamin Cummings, 1984 ).

Spectroscopy and spectrography are terms used to refer to the measurement of radiation intensity as a function of wavelength and are often used to describe experimental spectroscopic methods.

Experimentally, sp < sup > 2 </ sup > to sp < sup > 3 </ sup > ratios can be determined by comparing the relative intensities of various spectroscopic peaks ( including EELS, XPS, and Raman Spectroscopy ) to those expected for graphite or diamond.

These reflect fine details of the surface physics, and the technique of Field Electron Spectroscopy flourished for a while, before being superseded by newer surface-science techniques.

Other optical techniques are also used: Fluorescence Correlation and Cross-Correlation Spectroscopy ( FCS / FCCS ) can be used to gain information of fluorophore mobility in the membrane, Fluorescence Resonance Energy Transfer ( FRET ) can detect when fluorophores are in close proximity and optical tweezer techniques can give information on membrane viscosity.

Other techniques for measuring the properties of thin films include Ellipsometry, Surface Plasmon Resonance ( SPR ) Spectroscopy, and Dual Polarisation Interferometry.

Chemists are focusing on the energy exchange of different binding interactions and trying to develop scientific experiments to quantify the fundamental origins of these non-covalent interactions by utilizing various techniques such as NMR spectroscopy, Raman spectroscopy, isothermal titration calorimetry, surface tension, and UV-Vis Spectroscopy.