Units and constants

In sisl values are forced to be in the following units:

Type	Unit
Length	Ang
Energy	eV
Time	ps

More units will be added as they enter the code. For this sisl requires methods to convert between different units and also the handling of physical constants.

• Unit conversion
  • unit_group
  • unit_convert
  • unit_default
  • sisl.unit.units
  • Siesta units
• Constants
  • sisl.constant.PhysicalConstant
  • sisl.constant.q
  • sisl.constant.c
  • sisl.constant.h
  • sisl.constant.hbar
  • sisl.constant.m_e
  • sisl.constant.m_p
  • sisl.constant.G0
  • sisl.constant.G