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  2. Ultraviolet–visible spectroscopy - Wikipedia

    en.wikipedia.org/wiki/Ultraviolet–visible...

    A UV-Vis spectrophotometer is an analytical instrument that measures the amount of ultraviolet (UV) and visible light that is absorbed by a sample. It is a widely used technique in chemistry, biochemistry, and other fields, to identify and quantify compounds in a variety of samples.

  3. UV detectors - Wikipedia

    en.wikipedia.org/wiki/UV_detectors

    The vast majority of liquid chromatographic systems are equipped with ultraviolet (UV) absorption detectors. The most common UV-Vis detectors used are variable wavelength detectors (VWD), photo diode array detectors (PDA), and diode array detectors (DAD). [4] Variable wavelength detectors decide in advance which wavelength is needed for the ...

  4. Fourier-transform infrared spectroscopy - Wikipedia

    en.wikipedia.org/wiki/Fourier-transform_infrared...

    The goal of absorption spectroscopy techniques (FTIR, ultraviolet-visible ("UV-vis") spectroscopy, etc.) is to measure how much light a sample absorbs at each wavelength. [2] The most straightforward way to do this, the "dispersive spectroscopy" technique, is to shine a monochromatic light beam at a sample, measure how much of the light is ...

  5. Ultraviolet photography - Wikipedia

    en.wikipedia.org/wiki/Ultraviolet_photography

    In reflected UV photography the subject is illuminated directly by UV emitting lamps (radiation sources) or by strong sunlight. A UV transmitting filter is placed on the lens, which allows ultraviolet radiation to pass and which absorbs or blocks all light and infrared radiation. UV filters are made from special colored glass and may be coated ...

  6. NFL firing rumors: Latest hot seat updates, news entering ...

    www.aol.com/nfl-firing-rumors-latest-hot...

    Editor's note: Follow NFL coach firings and moves live updates for the latest Black Monday news. While some NFL franchises are playoff-bound, others are bound to the hiring process. Unfortunately ...

  7. Hundreds of California prisoners are fighting the LA fires ...

    www.aol.com/hundreds-california-prisoners...

    Hundreds of prisoners are helping to battle the wildfires in the Los Angeles area.. Incarcerated firefighters earn $26.90 to $34 for each 24-hour shift. It's far below California's minimum wage of ...

  8. Neighbor saw pickup truck used by New Orleans terrorist ... - AOL

    www.aol.com/neighbor-saw-pickup-truck-used...

    The woman, who identified herself as Shay, told The Post she saw the truck on Tuesday and her surveillance footage shows the vehicle's lights turn on at around 12:25 a.m. on New Year's Day.

  9. Cuvette - Wikipedia

    en.wikipedia.org/wiki/Cuvette

    Traditional ultraviolet–visible spectroscopy or fluorescence spectroscopy uses samples that are liquid. Often the sample is a solution, with the substance of interest dissolved within. The sample is placed in a cuvette and the cuvette is placed in a spectrophotometer for testing.