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a.u. of time
Symbol:  a.u. 
Category:  Time 
SI Equivalent:  2.41888×10-17 s
Dimension
System:  a.u. 
 
Notes
1 a.u. of time = h/2pEh
where h is the Planck constant (6.626069×10-34 J-s) and Eh = 1 hartree (4.3597482×10-18J).
Convert     a.u.  
1 a.u. =
Permeability coefficient
  Symbol Unit Name
2.41888×10-17  kg-m/N-s  kilogram meter per newton per second 
1.6645×10-5  perm-inch (0 °C)  perm-inch (0°C) 
1.65758×10-5  perm-inch (23 °C)  perm-inch (23°C) 
1.6645×10-2  perm-mil (0 °C)  perm-mil (0°C) 
1.65758×10-2  perm-mil (23 °C)  perm-mil (23°C) 
Time
  Symbol Unit Name
2.79963×10-17    blink 
2.79963×10-22  d  day 
2.8073×10-22  d (sider.)  day (sidereal) 
1.99974×10-23    fortnight 
6.71912×10-21  h  hour 
2.57339×106    Jordan's elementary time 
2.41888×10-11  ms  microsecond 
2.41888×10-14  ms  millisecond 
4.03147×10-19  min, mn  minute 
9.33212×10-24    month (30 days) 
1.02469×10-23    month (sidereal) 
9.20428×10-24    month (solar mean) 
9.48046×10-24    month (synodic), lunar month 
2.41888×10-8  ns  nanosecond 
2.41888×10-17  s  second 
2.41888×10-9    shake 
3.99948×10-23  w  week 
7.25665×10-8    wink 
7.66492×10-25  aastr.  year (astronomical), Bessel year 
7.67023×10-25  a, y  year (calendar) 
7.66485×10-25    year (sidereal) 
7.66498×10-25  a, y  year (solar mean) 
7.66514×10-25  atrop.  year (tropical) 
Glossary
Negotiate Your Salary

Learn the best principles to negotiate the salary you deserve!

Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

3D Scanners

A white paper to assist in the evaluation of 3D scanning hardware solutions.

Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.