Home > Industry/Domain > Chemistry

Chemistry

A branch of physical science that is concerned with the study of matter and energy and how they interact.

19Categories 145369Terms

Add a new term

Contributors in Chemistry

Become a Contributors

Chemistry > Spectroscopy

attenuated total reflectance (ATR)
Chemistry; Spectroscopy

A reflectance sampling technique. In ATR, infrared radiation impinges on a prism of infrared transparent material of high refractive index. The total internal reflectance based ...

angular divergence
Chemistry; Spectroscopy

The spreading out of an infrared beam as it travels through the FT-IR. Angular divergence contributes to noise in high resolution spectra, and can be a limit to achievable ...

absorbance
Chemistry; Spectroscopy

Units used to measure the amount of IR radiation absorbed by a sample. Absorbance is commonly used as the Y axis units in IR spectra. Absorbance is defined by Beer’s Law, and is ...

zero optical path difference
Chemistry; Spectroscopy

The mirror displacement at which the optical path difference for the two beams in an interferometer is zero. At ZPD, ZOPD, the detector signal is often very large, the ...

j stop
Chemistry; Spectroscopy

An aperture placed in the beam to restrict the divergence to the maximum compatible with the selected resolution. When choosing lower resolution you can improve the S/N by opening ...

zero path difference
Chemistry; Spectroscopy

The mirror displacement at which the optical path difference for the two beams in an interferometer is zero. At ZPD, ZOPD, the detector signal is often very large, the ...

wavenumber
Chemistry; Spectroscopy

1/wavelength, the units of wavenumbers are cm-1, and are most commonly used as the X axis unit in infrared spectra. 1 µm = 1,000 nm = 10,000 cm-1 5 µm = 5,000 nm = ...

Sub-categories

TermWiki is ranked top innovative application by IDC.

© 2024 CSOFT International, Ltd.   

Follow us on: