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  • Nature Publishing Group  (1)
  • Springer  (1)
  • 1980-1984  (2)
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  • Nature Publishing Group  (1)
  • Springer  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Measurements of thermal expansions of small mineral crystals (1982)
    Springer
    Physics and chemistry of minerals 8 (1982), S. 212-217 
    Details
    ISSN: 1432-2021
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Abstract A capacitance micrometer has been developed for the measurement of thermal expansions of small crystals over moderate temperature ranges (approximately 100 K above laboratory temperature). Linear coefficients are obtained to ±0.5×10−6 K−1 and volume coefficients to ±1.5×10−6 K−1. New values are reported for 13 materials, obtained as crystals down to 1 mm in size. For many of these we obtained satisfactory agreement with earlier data, but exceptions are zircon (volume coefficient 6.6±1.6×10−6 K−1, compared with earlier values up to 21×10−6 K−1) and strontium fluoride (volume coefficient 57.9±2.2×10−6 K−1, compared with 42 to 49×10−6 K−1). The new data are combined with values of incompressibility, density and specific heat to obtain new values of Grüneisen's ratio.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00309480
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Variability of the Earth's rotation (1981)
    [s.l.] : Nature Publishing Group
    Nature 289 (1981), S. 750-750 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] LONG BEFORE the advent of atomic clocks, it was well known that the Earth's rotation was an imperfect time-keeper. Precise time-keeping has always been one of the roles of astronomy and the stars, planets, and satellites provide us with several independent or semi-independent clocks. Rather than ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/289750a0
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    Paper (German National Licenses)
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