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CNC Machining Design Guide

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Metal 3D Printing Design Guide

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

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Injection Molding Design Guide

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

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year (tropical)
Symbol:  atrop. 
Category:  Time 
SI Equivalent:  3.15569×107 s
Dimension
 
Notes
The time interval corresponds to one revolution of the earth about the sun measured between successive mean vernal equinoxes.
Convert     atrop.  
1 atrop. =
Permeability coefficient
  Symbol Unit Name
3.15569×107  kg-m/N-s  kilogram meter per newton per second 
2.17152×1019  perm-inch (0 °C)  perm-inch (0°C) 
2.16249×1019  perm-inch (23 °C)  perm-inch (23°C) 
2.17152×1022  perm-mil (0 °C)  perm-mil (0°C) 
2.16249×1022  perm-mil (23 °C)  perm-mil (23°C) 
Time
  Symbol Unit Name
1.30461×1024  a.u.  a.u. of time 
3.65242×107    blink 
365.242  d  day 
366.243  d (sider.)  day (sidereal) 
26.0887    fortnight 
8765.81  h  hour 
3.35726×1030    Jordan's elementary time 
3.15569×1013  ms  microsecond 
3.15569×1010  ms  millisecond 
5.25949×105  min, mn  minute 
12.1747    month (30 days) 
13.3682    month (sidereal) 
12.008    month (solar mean) 
12.3683    month (synodic), lunar month 
3.15569×1016  ns  nanosecond 
3.15569×107  s  second 
3.15569×1015    shake 
52.1775  w  week 
9.46708×1016    wink 
0.99997  aastr.  year (astronomical), Bessel year 
1.00066  a, y  year (calendar) 
0.999961    year (sidereal) 
0.999979  a, y  year (solar mean) 
Glossary
CNC Machining Design Guide

Optimize your designs, reduce machining time, and lower your costs.

Metal 3D Printing Design Guide

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

3D Scanners

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

Injection Molding Design Guide

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