SI unit

Definitions

  • WordNet 3.6
    • n SI unit a complete metric system of units of measurement for scientists; fundamental quantities are length (meter) and mass (kilogram) and time (second) and electric current (ampere) and temperature (kelvin) and amount of matter (mole) and luminous intensity (candela) "Today the United States is the only country in the world not totally committed to the Systeme International d'Unites"
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Usage


In news:

1.1 This method details the digestion of samples and is applicable to retrieved fluid samples for metal ion measurements via ICP-MS. 1.2 The values stated throughout the standard shall be in SI units.
D5-06e1 Standard Test Method for Penetration of Bituminous Materials is being submitted for Reapproval and, per ASTM guidelines, for conversion to a Combined SI/English unit standard.
Chinese Communist Party official Cheng Si-wei talks to NewsHour correspondent Paul Solman about economic relations with the United States, foreign investment, textile exports and the recent revaluation of China's currency.
1.2 The values stated in SI units are to be regarded as the standard.
Emphasized use of SI units.
Koehler instruments has offered to review this method for SI unit policy compliance and to convert the drawings to SI units.
The Orbit ACS (Automation and Control Systems) SI 100 is a one-channel stand-alone unit for quick measurement and PLC output.
1.2 The values stated in SI units are to be regarded as standard.
Can you imagine if Big Al Mack or J-Si were President of the United States.
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In science:

For each spin variable Si and each random anisotropy axis ni′ , we restrict the allowed states to be the twelve [110] unit vectors.
Quasi-Long-Range Order in Random-Anisotropy Heisenberg Models
Xi Z aNiti (si )δ3 (r − ri (si ))dsi , where si parameterizes the i’th dislocation loop, ri (si ) is the position of that loop, ti (si ) is its local unit tangent, and Ni the “charge” or number of excess layers associated with the dislocation.
Smectic Liquid Crystals in Random Environments
F [Fig. 8(b,c)], in order to minimize the kinetic energy cost of having more spin ups than downs. |s, ki is a particular type of excited spin-s state, obtained from |si by moving one electron from its topmost occupied level (s − 1 + p/2) upwards by k units of d into a higher level (s − 1 + p/2 + k).
Review: Superconductivity in ultrasmall metallic grains
Here, the summation is over all configurations {Siℓ} of the Ising fields, I is the N × N unit matrix, B σ ℓ ’s are N × N matrices where ν (ℓ)ij = δij Siℓ and k is the matrix representation of the kinetic energy operator, Eq. (10.3).
d_{x^2-y^2}-wave superconductivity and the Hubbard model
There is a number k (depending on U , W and ε), a partition [0, 1] = ∪k i=1Si of the unit interval into k measurable pieces and two functions W ′ , U ′ ∈ W0 such that both W ′ and U ′ are constant on every rectangle Si × Sj and furthermore that kW − W ′ k1 , kU − U ′k1 ≤ ε.
Testing properties of graphs and functions
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