add length units for convenience

smrt-model · Aug 28, 2019 · 8d16d0d · 8d16d0d
1 parent 9e039af
commit 8d16d0d
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diff --git a/smrt/__init__.py b/smrt/__init__.py
@@ -15,7 +15,7 @@
 from .core import sensor
 from .core.result import open_result
 from .core.sensitivity_study import  sensitivity_study
-from .core.globalconstants import PSU, GHz
+from .core.globalconstants import PSU, GHz, cm, mm, micron
 from .core.plugin import register_package
 
 from .inputs import sensor_list
diff --git a/smrt/core/globalconstants.py b/smrt/core/globalconstants.py
@@ -28,4 +28,7 @@
 PERMITTIVITY_OF_FREE_SPACE = 1 / (4e-7 * np.pi * C_SPEED ** 2)
 
 GHz = 1e9    # G in fact
+cm = 1e-2    # centimeter
+mm = 1e-3    # millimeter
+micron = 1e-6 # micron
 PSU = 1e-3   # g/kg -> kg/kg