бұрыштық айырмашылық

бұрыштық айырмашылық

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 resolution.

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Vārdšķira: noun
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Nozare/domēns: Chemistry
Category: Spectroscopy
Company: Newport
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айырмашылық

Chemistry; Spectroscopy

A measure of how well an IR spectrometer can distinguish spectral features that are close together. For instance, if two features are 4 cm-1 apart and can be discerned easily, the ...

коллимация

Chemistry; Spectroscopy

The ideal input beam is a cylinder of light. No beam of finite dimensions can be perfectly collimated; at best there is a diffraction limit. In practice the input beam is a cone ...

бірігіп қосу

Chemistry; Spectroscopy

The process of adding interferograms together to achieve an improvement in signal-to-noise ratio.

орталық шығарылым

Chemistry; Spectroscopy

The sharp, intense part of an interferogram. The size of the centerburst is directly proportional to the amount of infrared radiation striking the detector.

импульстер қатарының қиюы

Chemistry; Spectroscopy

With no apodization, all points in an interferogram are given equal weight, up to the edges of the interferogram. If the resolution is less than the smallest linewidth in the ...

негізгі желіні түзету

Chemistry; Spectroscopy

A spectral manipulation technique used to correct spectra with sloped or varying baselines. The user must draw a function parallel to the baseline, then this function is ...

бедерсіз спектр

Chemistry; Spectroscopy

A single beam spectrum acquired with no sample in the infrared beam. The purpose of a background spectrum is to measure the contribution of the instrument and environment to the ...

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