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Related Concept Videos

IR Spectrometers01:25

IR Spectrometers

There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
UV–Vis Spectrometers01:14

UV–Vis Spectrometers

The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell. Samples for...

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Related Experiment Video

Updated: Jun 16, 2026

O-cresol Concentration Online Measurement Based On Near Infrared Spectroscopy Via Partial Least Square Regression
06:50

O-cresol Concentration Online Measurement Based On Near Infrared Spectroscopy Via Partial Least Square Regression

Published on: November 8, 2019

On-line data reduction with a prism spectrometer.

S Loughin, C Y Yang, J E Fischer

    Applied Optics
    |February 16, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study details an automatic spectroscopy system using a programmable calculator and prism monochromator. The system achieves linear spectral presentation via Aitken-Lagrange interpolation, enhancing data logging and spectral analysis.

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    High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

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    Related Experiment Videos

    Last Updated: Jun 16, 2026

    O-cresol Concentration Online Measurement Based On Near Infrared Spectroscopy Via Partial Least Square Regression
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    Published on: November 8, 2019

    Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy
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    High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis
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    High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

    Published on: December 22, 2015

    Area of Science:

    • Instrumentation and measurement
    • Spectroscopy
    • Computational methods

    Background:

    • Traditional spectroscopy systems can be complex to automate.
    • Accurate data presentation is crucial for spectral analysis.
    • Efficient data logging is essential for various scientific applications.

    Purpose of the Study:

    • To present the hardware and software design of an automated spectroscopy system.
    • To detail an interpolation subroutine for linear spectral presentation and data logging.
    • To explore the system's applications in reflectance and modulation spectroscopies.

    Main Methods:

    • Development of an automatic spectroscopy system integrating a programmable calculator and prism monochromator.
    • Implementation of a four-point Aitken-Lagrange interpolation for linear spectral presentation.
    • Detailed description of the interpolation subroutine, applicable to data logging with thermocouples.

    Main Results:

    • Successful implementation of an automatic spectroscopy system.
    • Achieved linear spectral presentation through advanced interpolation techniques.
    • Demonstrated utility in both open- and closed-loop reflectance and modulation spectroscopy.

    Conclusions:

    • The described automatic spectroscopy system offers a versatile and efficient solution.
    • The Aitken-Lagrange interpolation subroutine enhances data accuracy and applicability.
    • The system has broad potential applications beyond the discussed spectroscopies.