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  2. Stopped-flow - Wikipedia

    en.wikipedia.org/wiki/Stopped-flow

    At some point in time, the flow is suddenly stopped, and the reaction is monitored using a suitable spectroscopic probe, such as absorbance, fluorescence or fluorescence polarization. The change in spectroscopic signal as a function of time is recorded, and the rate constants that define the reaction kinetics can then be obtained by fitting the ...

  3. Vacuum fluorescent display - Wikipedia

    en.wikipedia.org/wiki/Vacuum_fluorescent_display

    The device consists of a hot cathode , grids and anodes encased in a glass envelope under a high vacuum condition. The cathode is made up of fine tungsten wires, coated by alkaline earth metal oxides (barium, [2] strontium and calcium oxides [9] [10]), which emit electrons when heated to 650 °C [2] by an electric

  4. Photomultiplier tube - Wikipedia

    en.wikipedia.org/wiki/Photomultiplier_Tube

    Ultraviolet glass transmits visible and ultraviolet down to 185 nm. Used in spectroscopy. Synthetic silica transmits down to 160 nm, absorbs less UV than fused silica. Different thermal expansion than kovar (and than borosilicate glass that's expansion-matched to kovar), a graded seal needed between the window and the rest of the tube. The seal ...

  5. Fluorometer - Wikipedia

    en.wikipedia.org/wiki/Fluorometer

    Fluorometer designed to measure chlorophyll fluorescence in plants. A fluorometer, fluorimeter or fluormeter is a device used to measure parameters of visible spectrum fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. [1]

  6. Fluorescence microscope - Wikipedia

    en.wikipedia.org/wiki/Fluorescence_microscope

    Alternatively the intrinsic fluorescence of a sample (i.e., autofluorescence) can be used. [1] In the life sciences fluorescence microscopy is a powerful tool which allows the specific and sensitive staining of a specimen in order to detect the distribution of proteins or other molecules of interest. As a result, there is a diverse range of ...

  7. Optical spectrometer - Wikipedia

    en.wikipedia.org/wiki/Optical_spectrometer

    If the instrument is designed to measure the spectrum on an absolute scale rather than a relative one, then it is typically called a spectrophotometer. The majority of spectrophotometers are used in spectral regions near the visible spectrum. A spectrometer that is calibrated for measurement of the incident optical power is called a ...