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Bøker Bok 110 av 14The meter is the length equal to 1 650 763.73 wavelengths in vacuum of the radiation...
" The meter is the length equal to 1 650 763.73 wavelengths in vacuum of the radiation corresponding to the transition between the levels 2p10 and 5d5 of the krypton-86 atom. "
Revolution in Measurement: Western European Weights and Measures Since the ... - Side 259
av Ronald Edward Zupko - 1990 - 548 sider
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Metrication: Managing the Industrial Transition

R. G. Liptai - 1975 - 342 sider
...given in the following paragraphs: A2.12.1 metre — The metre is the length equal to I 650 763.73 wavelengths in vacuum of the radiation corresponding to the transition between the levels 2p,0 and 5d» of the krypton-86 atom. (adopted at IIthCGPM I960) A2.12.2 kilogram — The kilogram...
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The International Bureau of Weights and Measures, 1875-1975 ..., Volum 13

Chester Hall Page, Paul Vigoureux - 1975 - 248 sider
...1th CGPM on October 14, 1960, in the following terms: "The metre is the length equal to 1 650 763.73 wavelengths in vacuum of the radiation corresponding to the transition between the levels 2pi0and 5d3 of the krypton-86 atom."5 5 The energy levels of the krypton-86 atom which occur in this...
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Electric and Magnetic Fields

Sir Charles William Oatley - 1976 - 262 sider
...units of length, mass and time are defined as follows. The metre is the length equal to 1 650763.73 wavelengths in vacuum of the radiation corresponding to the transition between the levels 2p10 and 5ds of the krypton-86 atom. Distances of the order of a metre can be measured in terms of...
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Spacecraft Attitude Determination and Control

James R. Wertz - 1978 - 858 sider
...for example, NBS Special Publication 330 [NBS, 1974]): The metre is the length equal to 1 650 763.73 wavelengths in vacuum of the radiation corresponding to the transition between the levels 2p|0 and 5d5 of the krypton-86 atom. The kilogram is the mass of the international prototype of the...
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Basic Electronics and Linear Circuits

N. N. Bhargava, N. N. Bhargava S. C. Gupta D. C. Kulshreshtha - 1984 - 490 sider
...mole moi [mol] Luminous intensity candela cd W Length: The metre is the length equal to 1 650 760.73 wavelengths, in vacuum, of the radiation corresponding to the transition between the levels 2pl° and 5ds of the krypton-86 atom. Mass: The kilogram is equal to the mass of the international...
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Physical Chemistry Through Problems

S. Dogra - 1984 - 674 sider
...According to SI, the unit for distance is 'metre (m)', defined as the length equal to 1 650 763.73 wavelengths in vacuum of the radiation corresponding to the transition between the levels 2p,0 and 5d6 of the krypton-86 atom. The SI unit of area is the square metre (m2). Land is often measured...
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Geotechnical Engineering

C Venkatramaiah - 1995 - 1063 sider
...quantity. The base units of SI System are as follows: Length The metre is the length equal to 1,650,763.73 wavelengths in vacuum of the radiation corresponding to the transition between the levels 2pl° and 5cf of the Krypton-86 atom. Mass The Kilogram is the unit of mass; it is equal to the mass...
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Practical Handbook of Spectroscopy

James W. Robinson - 1991 - 944 sider
...abrogated as the international standard of length, and the meter was redefined as equal to 1 650 763.73 wavelengths in vacuum of the radiation corresponding to the transition between the 2p, 0 and 5d 5 levels of the krypton-86 atom. ‘ Since thefl the wavelength of this orange-red line...
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A Handbook of Food Packaging

Frank A. Paine, Heather Y. Paine - 1992 - 497 sider
...whilst the metre was defined by an International Conference in October 1960 as 'equal to 1650763.73 wavelengths, in vacuum, of the radiation corresponding to the transition between the levels 2p10 and 5d5 of the krypton-86 atom'. This can be determined to an accuracy of one part in 108. Thus,...
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The International System of Units (Si): The Metric System

1992 - 56 sider
...adopt a natural and indestructible standard, decides 1. The meter is the length equal to 1 650 763.73 wavelengths in vacuum of the radiation corresponding to the transition between the levels 2pw and 5d5 of the krypton 86 atom.* 2. The definition of the meter in force since 1889, based on the...
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