Spectroscopy

method of predicting a chemical complex's absorption spectrum

time taken by an object, particle or wave (be it acoustic, electromagnetic, etc.) to travel a distance through a medium

analytical technique in physics and chemistry

Method for material analysis. Backscattered electrons (BSEs) are produced by elastic collisions with atoms from the sample. BSEs produce an image that is related to material composition and orientation providing both spatial and chemical information.

the formation of sound waves following light absorption in a material

probability distribution often used in spectroscopy and diffraction

spectroscopy method employing microwaves

spectroscopy based on time- or space-domain data

diagram showing energy levels of an atom

specific wavelength, wavenumber or frequency at which the total absorbance of a sample does not change during a chemical reaction or a physical change of the sample

notation to represent symmetry in point groups

investigative astrophysics technique

type of statistical analysis

thumb|right|250px|Nucleic acid melting curve showing hyperchromicity as a function of temperature Hyperchromicity is the increase of absorbance (optical density) of a material. The most famous example is the hyperchromicity of DNA that occurs when the DNA duplex is denatured. The UV absorption is increased when the two single DNA strands are being separated, either by heat or by addition of denaturant or by increasing the pH level. The opposite, a decrease of absorbance is called hypochromicity.

Dimensionless quantity in spectroscopy

Longer wavelength and lower frequency

measurement of absorbed electromagnetic energy

term

physical phenomenon

Decrease in the Racah interelectronic repulsion parameter that occurs when a transition-metal free ion forms a complex with ligands

mixed quantum state of a system with a spin of 1/2, such that there are two allowed values of the spin component, −1/2 and +1/2

A microprobe is an instrument that applies a stable and well-focused beam of charged particles (electrons or ions) to a sample.

variation of reflectance or emittance of a material with respect to wavelengths

difference between rotation and revolution

chemical compound

experimental chemistry technique which uses inert gases to isolate and stabilize normally unstable intermediates, free radicals, and ions

Quantitative measurement of the energy of alpha particles

Notation in X-ray spectroscopy

method of imaging using a limited number of wavelengths in the electromagnetic spectrum

American award in spectroscopy (1970–)

energy diagrams for transition metal complexes

quantity that describes the rate at which energy is transferred by electromagnetic radiation through a real or virtual surface, per unit surface area and per unit wavelength (or, equivalently, per unit frequency)

analytic technique

transition from a higher to a lower electronic state in a molecule or atom

format for notating atoms and molecules

topic in astronomy

A Globar is used as a thermal light source for infrared spectroscopy. The preferred material for making Globar is silicon carbide that is shaped as rods or arches of various sizes. When inserted into a circuit that provides it with electric current, it emits radiation from ~ 2 to 50 micrometres wavelength via the Joule heating phenomenon. In 1962, a study showed that the emissivity of a SiC Globar between a wavelength of 0.65µm and 14.9µm ranged between 0.70 and 0.84. In 2007, research on the emissivity of Globar used computer modelling to attempt to compensate for the effect of atmospheric wa

Using nucleus properties to probe material properties

luminescent phenomenon discovered by Ben Zhong Tang et al. in 2001

Hamiltonian operator for molecules

A spectroradiometer is a light measurement tool that is able to measure both the wavelength and amplitude of the light emitted from a light source. Spectrometers discriminate the wavelength based on the position the light hits at the detector array allowing the full spectrum to be obtained with a single acquisition. Most spectrometers have a base measurement of counts which is the un-calibrated reading and is thus impacted by the sensitivity of the detector to each wavelength. By applying a calibration, the spectrometer is then able to provide measurements of spectral irradiance, spectral radi

An optode or optrode is an optical sensor device that optically measures a specific substance usually with the aid of a chemical transducer.

measure of how deep light or any electromagnetic radiation can penetrate into a material

technology for measuring geometrical dimensions of particle

curve used to interpret spectral features in astronomy

phenomenon in spectroscopy

Spectrochemistry is the application of spectroscopy in any of several fields of chemistry.

experimental tool for studying electrically active defects in semiconductors

analytical method

Experimental technique in physics

aspect of history