Thomson

Thomson may refer to:

Names

  • Thomson (surname), includes a list of people with this name and a description of its origin
  • Science

  • thomson (unit), a unit for mass-to-charge ratio, symbol: Th; named in honor of J. J. Thomson
  • J. J. Thomson, British physicist and Nobel laureate credited with the discovery of electrons and isotopes, and the invention of the mass spectrometer.
  • William Thomson, 1st Baron Kelvin (1824–1907), British physicist who proposed the absolute scale of temperature in thermodynamics.
  • Thomson effect, named after William Thomson, which is the heating or cooling of a current-carrying conductor when a temperature gradient is present
  • Joule–Thomson effect, named after James Prescott Joule and William Thomson, which explains the temperature change of a fluid when allowed to pass through a porous plug with the system kept thermally insulated
  • Thomson's gazelle, a species of gazelle
  • Thomson structures, the same as Widmanstätten figures
  • Thomson is a standard author abbreviation used to indicate Thomas Thomson when citing a botanical name
  • Thomson (crater)

    Thomson is a lunar crater that is located within the Mare Ingenii on the far side of the Moon. Just to the northeast is the unusual merged crater formation of Van de Graaff. On the northwest rim of the mare is O'Day, and to the south-southwest is Obruchev on the southern shore of Mare Ingenii.

    In the past the crater was flooded by lava, leaving only the outer rim intact. There are gaps in the eastern and western rims, leaving two "half-moon" mountainous formations facing each other across the relatively flat floor. There is a similar lava-flooded crater remnant attached to the southern rim of Thomson. The floor of Thomson has a number of secondary impacts that form short, linear streaks across the surface.

    Satellite craters

    By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Thomson.

    References


    Ulmus davidiana var. japonica 'Thomson'

    Ulmus davidiana var. japonica 'Thomson' is a hardy, cold-resistant cultivar of the Japanese Elm assessed by the Prairie Farm Rehabilitation Administration (PFRA) Nursery (now the AAFC-PFRA&E Shelterbelt Centre) at Indian Head, Saskatchewan, in the 1970s as part of its shelterbelt tree research. .

    The tree was one of a number of Japanese Elms planted in an experimental shelterbelt at Indian Head in 1953. These shelterbelt trees were derived from seed taken from two openly-pollinated Japanese Elms obtained from Manchuria and planted at Indian Head in 1929. 'Thomson' attained a height of 8 m in 25 years, a rather modest performance compared with Siberian Elm Ulmus pumila and American Elm Ulmus americana grown at the same site. Nevertheless, the tree has proved exceptionally hardy.

    Description

    'Thomson' is distinguished by a single trunk bearing a vase-shaped crown, the branches forming strong wide-angled crotches; the bark is dark grey and deeply fissured. The twigs have diamond-shaped fissures that become more apparent on second-year wood, and occasionally sport corky wings. The leaves are borne on 1 cm petioles, and average 7.5 cm in length, obovate to elliptic, with the typical acuminate apex and oblique base; dark green and glabrous, they turn bright yellow in autumn. The samarae are obovate and deeply notched at the apex.

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    Latest News for: Thomson

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    Rob Thomson Gives Reason for Early Taijuan Walker Exit

    The Capital Journal 19 Apr 2025
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    The Capital Journal 18 Apr 2025
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    15 Thomson federal prison officers treated after possible drug exposure, union says

    Journal Gazette 18 Apr 2025
    THOMSON — Fifteen corrections officers at the Thomson federal prison were sent to local hospitals Wednesday, April 16, after they were exposed in the prison mail room to what is believed to be a dangerous drug, the union president said.
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    The Capital Journal 17 Apr 2025
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    Public Technologies 17 Apr 2025
    This is an abstract of the document ... Attachments Original document Permalink ... Miller Thomson LLP published this content on April 17, 2025, and is solely responsible for the information contained herein.
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    Sydney Morning Herald 17 Apr 2025
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    Public Technologies 16 Apr 2025
    ). Our lawyers are dedicated to delivering strategic, business-focused legal solutions for their clients ... Fowlis Adam J ... Louis A ... Miller Thomson LLP published this content on April 16, 2025, and is solely responsible for the information contained herein.
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    Public Technologies 16 Apr 2025
    [...]. This is an abstract of the document ... Miller Thomson LLP published this content on April 16, 2025, and is solely responsible for the information contained herein.
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