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
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
<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 />
mass <strong>of</strong> atom (<strong>of</strong> a<br />
nuclide x),<br />
1 kilogram kg 695<br />
nuclidic mass 1 unified atomic mass unit 1,660 540 2 x 10 -27 kg u 696<br />
unified atomic mass<br />
constant<br />
(rest) mass <strong>of</strong> electron 1 one 1 698<br />
(rest) mass <strong>of</strong> proton<br />
(rest) mass <strong>of</strong> neutron<br />
mass excess 1 kilogram kg 701<br />
mass defect 1 unified atomic mass unit 1,660 540 2 x 10 -27 kg u 702<br />
relative mass excess 1 one 1 703<br />
relative mass defect<br />
packing fraction 1 one 1 705<br />
binding fraction<br />
elementary charge 1 coulomb C 707<br />
Planck constant 1 joule second J . s 708<br />
Bohr radius 1 metre m 709<br />
1 ångström 10 - 10<br />
m (exactly) Å 710<br />
Rydberg constant 1 reciprocal metre m -¹ 711<br />
Hartree energy 1 joule J 712<br />
magnetic moment <strong>of</strong><br />
partical or nucleus<br />
Bohr magneton<br />
nuclear magneton<br />
gyromagnetic<br />
coefficient,<br />
(gyromagnetic ratio)<br />
g-factor <strong>of</strong> atom or<br />
electron<br />
g-factor <strong>of</strong> nucleus or<br />
nuclear particle<br />
Larmor angular<br />
frequency<br />
1 ampere square metre A . m ² 713<br />
1 ampere square metre per<br />
joule second<br />
A . m ² /(J . s) 716<br />
1 one 1 717<br />
1 reciprocal second s -¹ 719<br />
nuclear precession 1 radian per second rad/s 720<br />
cyclotron angular<br />
frequency<br />
nuclear quadrupole<br />
moment<br />
1 square metre m ² 722<br />
nuclear radius 1 metre m 723<br />
electron radius<br />
Compton wavelength<br />
orbital angular<br />
momentum quantum<br />
number<br />
1 one 1 726<br />
Recommendation 20 169
Change language