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单词 polarimeter
释义

Definition of polarimeter in English:

polarimeter

noun ˌpəʊləˈrɪmɪtəˌpoʊləˈrɪmɪdər
  • An instrument for measuring the polarization of light, and especially for determining the effect of a substance in rotating the plane of polarization of light.

    旋光计,偏光计;偏振计

    Example sentencesExamples
    • A major difficulty in using microscopes for polarimeters is that most polarimeters purposely only collect light from a very small angle
    • The SMM satellite's coronagraph/polarimeter detected a large halo coronal mass ejection; the halo meant that the cloud was directed at Earth.
    • PDR Chiral make advanced laser polarimeters, but their site not just a glorified sales pitch for their instruments, as is so often the case with commercial web sites.
    • A nano-optic waveplate combined with a polarization beamsplitter can measure differential polarization and phase response in a compact polarimeter.
    • The literature is full of other, more complicated ways to measure optical anisotropy (involving polarimeters and ellipsometers, for example), usually using a combination of polarizers and retarders.
    • Using polarimeters, which enable the polarization of the light received to be determined, astronomers hoped to be able to identify whether there was dust within the corona.
    • They feature fast measurement speed (15 measurements per second), ideal for translating the polarimeter across samples and providing for an averaging of measurements for increased precision.
    • For remote-sensing applications, the goal is to produce pixel-integrated imaging polarimeters and spectral imagers directly on the IR FPA without the need for external optical filter elements or moving parts.
    • Because existing spectrometers and polarimeters make use of mechanical scanning methods, they are unreliable and require a long time to acquire complete data sets.
    • Rotation angles were measured with a polarimeter on one-second integration interval.
    • A 6-cm receiving system with a polarimeter, made by engineers of German Max-Planck-Institute for Radio-astronomy, has been installed to the 25 radio telescope in Urumqi, the capital of western China's Xinjiang Uygur Autonomous Region.
    • Circular dichroism spectra were measured in a Jasco-600 polarimeter with a bandwidth of 2 nm.
    • For example, the effect of acids and salts on a solution of an optically active substance such as nicotine could be followed by observing the rotation of the plane of polarised light through a polarimeter.
    • All the CD experiments were done in a JASCO-J715 polarimeter (JASCO, Tokyo, Japan) in a 0.1-cm pathlength cell, with a slit width of 1 nm, response time of 4 s and scan speed of 50 nm/s. Each data point was an average of three accumulations.

Derivatives

  • polarimetric

  • adjective
    • We put these principles to work when we designed and built a waveplate for a spectropolarimeter and polarimetric filtergraph being built by Lockheed Martin Solar and Astrophysics Laboratory (Palo Alto, CA) under contract to NASA.
      Example sentencesExamples
      • In the few past years, polarimetric observations with the VLT have led to the discovery of magnetic fields in a large number of stellar objects in late evolutionary stages.
      • In the lab, however, people are now using more polarimetric techniques because they let them calculate all polarization states.
      • Several difficulties arise from using a conventional light microscope for polarimetric studies.
      • By the time Wang had collected polarimetric data on some 15 different supernovae, he saw that there were two populations with markedly different degrees of polarization.
  • polarimetry

  • noun ˌpəʊləˈrɪmətriˌpoʊləˈrɪmətri
    • Through Lifan's lobbying, we are moving to include polarimetry as well.
      Example sentencesExamples
      • We studied polarimetry with wide-band filters and a simple instrument that took us six months to calibrate.
      • Precision control of polarization is increasingly important in disciplines such as solar polarimetry, optical communications, biomedical imaging, military target identification, chemical analysis, and wavelength filtering.
      • In addition to polarimetry, analyzing the spectrum of a Type Ia supernova during the rising part of its light curve can reveal specific information about its elemental composition.
      • In polarimetry, the polarization state of a light field can always be completely characterized by a Stokes vector and sometimes by a Jones vector.

Origin

Mid 19th century: from medieval Latin polaris 'polar' + -meter.

Definition of polarimeter in US English:

polarimeter

nounˌpōləˈrimidərˌpoʊləˈrɪmɪdər
  • An instrument for measuring the polarization of light, and especially (in chemical analysis) for determining the effect of a substance in rotating the plane of polarization of light.

    旋光计,偏光计;偏振计

    Example sentencesExamples
    • PDR Chiral make advanced laser polarimeters, but their site not just a glorified sales pitch for their instruments, as is so often the case with commercial web sites.
    • A major difficulty in using microscopes for polarimeters is that most polarimeters purposely only collect light from a very small angle
    • A nano-optic waveplate combined with a polarization beamsplitter can measure differential polarization and phase response in a compact polarimeter.
    • Rotation angles were measured with a polarimeter on one-second integration interval.
    • Using polarimeters, which enable the polarization of the light received to be determined, astronomers hoped to be able to identify whether there was dust within the corona.
    • For remote-sensing applications, the goal is to produce pixel-integrated imaging polarimeters and spectral imagers directly on the IR FPA without the need for external optical filter elements or moving parts.
    • Because existing spectrometers and polarimeters make use of mechanical scanning methods, they are unreliable and require a long time to acquire complete data sets.
    • All the CD experiments were done in a JASCO-J715 polarimeter (JASCO, Tokyo, Japan) in a 0.1-cm pathlength cell, with a slit width of 1 nm, response time of 4 s and scan speed of 50 nm/s. Each data point was an average of three accumulations.
    • A 6-cm receiving system with a polarimeter, made by engineers of German Max-Planck-Institute for Radio-astronomy, has been installed to the 25 radio telescope in Urumqi, the capital of western China's Xinjiang Uygur Autonomous Region.
    • The literature is full of other, more complicated ways to measure optical anisotropy (involving polarimeters and ellipsometers, for example), usually using a combination of polarizers and retarders.
    • They feature fast measurement speed (15 measurements per second), ideal for translating the polarimeter across samples and providing for an averaging of measurements for increased precision.
    • The SMM satellite's coronagraph/polarimeter detected a large halo coronal mass ejection; the halo meant that the cloud was directed at Earth.
    • For example, the effect of acids and salts on a solution of an optically active substance such as nicotine could be followed by observing the rotation of the plane of polarised light through a polarimeter.
    • Circular dichroism spectra were measured in a Jasco-600 polarimeter with a bandwidth of 2 nm.

Origin

Mid 19th century: from medieval Latin polaris ‘polar’ + -meter.

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更新时间:2025/1/30 22:51:10