- is not feasible for practical usage and (was up to now not used, thus no consequence)
moreover, Oersted is a cgs unit while we use SI units, thus also not suitable for FEM, only makes problems for magnetization
This undoes a small part of commit 9ec0bcdcf2,
which seems a bit too agressive. Without the cmath header the build fails
using Apple clang version 11.0.0 (clang-1100.0.33.17) on Mojave with the
following error:
.../FreeCAD-git/src/Base/UnitsSchemaInternal.cpp:39:24: error: call to 'abs' is ambiguous
double UnitValue = std::abs(quant.getValue());
^~~~~~~~
/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/usr/include/stdlib.h:132:6: note: candidate function
int abs(int) __pure2;
^
/Library/Developer/CommandLineTools/usr/bin/../include/c++/v1/stdlib.h:111:44: note: candidate function
inline _LIBCPP_INLINE_VISIBILITY long abs( long __x) _NOEXCEPT {return labs(__x);}
^
/Library/Developer/CommandLineTools/usr/bin/../include/c++/v1/stdlib.h:113:44: note: candidate function
inline _LIBCPP_INLINE_VISIBILITY long long abs(long long __x) _NOEXCEPT {return llabs(__x);}
^
1 error generated.
- fix message that permittivity object was not handled
- set an expression, otherwise the user gets only "0.000" for the default of 8.8e-12
- use as unit the common "F/m" (this is also more user-friendly than "s^4*A^2 / (m^3*kg)")
- fix a ToDo
Contrary to any other Unit with micro prefix (e.g. ug, uH, uF) the
string was created with a Latin1 encoding instead of UTF-8.
The problem can be verified with these python statements:
```
FreeCAD.Units.schemaTranslate(FreeCAD.Units.MicroSiemens, 0)
FreeCAD.Units.schemaTranslate(FreeCAD.Units.MicroGram, 0)
```
- this is necessary to perform electrodynamics simulations. Since the typical values are in the range of 1e6 S/m, we need the new units kS and MS
- since this is for simulations, also add electrical conductivity to the FEM material cards
Found via `codespell -q 3 --skip="*.po,*.ts,./.git,./src/3rdParty,./src/CXX,./src/zipios++,./src/Mod/Assembly/App/opendcm,./ChangeLog.txt" -I ../fc-word-whitelist.txt` and `grep`. Excess whitespace auto-removed by Atom editor.
Independent of scale, use only mm/min or in/min because it is compatible
with GCODE feed rate units.
(My use case is definition os feed-rates in PathLoadTool.py).
