Annex I Units of Measure: Code elements listed by quantities - UNECE
Annex I Units of Measure: Code elements listed by quantities - UNECE
Annex I Units of Measure: Code elements listed by quantities - UNECE
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<strong>Code</strong>s for <strong>Units</strong> <strong>of</strong> <strong>Measure</strong> used in International Trade<br />
<strong>Units</strong> <strong>of</strong> <strong>Measure</strong>: <strong>Code</strong> <strong>elements</strong> <strong>listed</strong> <strong>by</strong> <strong>quantities</strong><br />
Quantity<br />
Level<br />
Cat.<br />
Use<br />
Id.<br />
Name<br />
Conversion factors to SI<br />
units<br />
(1 unit equals)<br />
Represen.<br />
Symbol<br />
Cross<br />
ref.<br />
Constants <strong>of</strong> Matter<br />
Prandtl number 1 one 1 871<br />
Schmidt number 1 one 1 872<br />
Lewis number 1 one 1 873<br />
Magnetohydrodynamics<br />
magnetic Reynolds<br />
number<br />
1 one 1 874<br />
Alfvén number 1 one 1 875<br />
Hartmann number 1 one 1 876<br />
Cowling number 1 one 1 877<br />
SOLID STATE<br />
PHYSICS<br />
lattice vector 1 metre m 879<br />
fundamental lattice<br />
vector<br />
lattice plane spacing 1 ångström 10 - 10<br />
m (exactly) Å 881<br />
Burgers vector<br />
Bragg angle 1 radian rad 883<br />
1 degree 0,017 453 29 rad ° 884<br />
order <strong>of</strong> reflexion 1 one 1 885<br />
short-range order<br />
parameter<br />
long-range order<br />
parameter<br />
1 one 1 886<br />
relaxation time 1 second s 888<br />
carrier life time<br />
magnetic flux quantum 1 weber Wb 890<br />
particle position vector 1 metre m 891<br />
equilibrium position<br />
vector <strong>of</strong> ion or atom<br />
displacement vector <strong>of</strong><br />
ion or atom<br />
De<strong>by</strong>e-Walle factor 1 one 1 894<br />
mean free path <strong>of</strong><br />
phonons or electrons<br />
London penetration<br />
depth<br />
coherence length<br />
diffusion length<br />
1 metre m 895<br />
Recommendation 20 175
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