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Related Concept Videos

Overview of Microscopy Techniques01:22

Overview of Microscopy Techniques

The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...
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UV–Vis Spectrometers01:14

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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 17, 2026

Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters
07:05

Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters

Published on: June 18, 2021

A solar image or spectrum scanning technique.

W C Livingston

    Applied Optics
    |January 14, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a novel focal plane scanning technique for improved solar spectrophotometry. The method minimizes noise and enables rapid, precise image scanning, crucial for analyzing solar continuum light.

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    Excitation-Scanning Hyperspectral Imaging Microscopy to Efficiently Discriminate Fluorescence Signals

    Published on: August 22, 2019

    Area of Science:

    • Optical Engineering
    • Solar Physics
    • Spectroscopy

    Background:

    • Solar spectrophotometry requires rapid scanning to overcome excess noise observed at low frequencies.
    • Existing methods may struggle with noise and scanning speed limitations.

    Purpose of the Study:

    • To present a new focal plane scanning technique for enhanced optical measurements.
    • To address the limitations of current methods in solar spectrophotometry.

    Main Methods:

    • Developed a scanning technique with displaced but undeviated output beam.
    • Ensured constant focus and minimal introduced polarization (<0.7%).
    • Demonstrated rapid scanning capability over a 90 mm image area.

    Main Results:

    • Achieved high linearity and low jitter performance.
    • The technique effectively mitigates low-frequency excess noise in solar continuum observations.
    • Quantified performance metrics for linearity and jitter.

    Conclusions:

    • The described focal plane scanning technique is suitable for high-performance solar spectrophotometry.
    • This innovation enables more accurate and efficient analysis of solar light.
    • The method offers a solution for noise reduction in low-frequency spectral measurements.