From 906581983dd1e64562063bcb2890a5033bf9450a Mon Sep 17 00:00:00 2001
From: Daniel Sank <sank.daniel@gmail.com>
Date: Tue, 7 Jul 2026 14:17:50 -0700
Subject: [PATCH 1/2] Add sqrt flux and sqrt power.

These are useful in the analysis of microwave circuits where
we deal with "power waves" having dimensions of square root of
power.
---
 tunits/__init__.py               |  2 ++
 tunits/core/cython/dimension.pyx | 44 ++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)

diff --git a/tunits/__init__.py b/tunits/__init__.py
index 52f0b46..ebfa29b 100644
--- a/tunits/__init__.py
+++ b/tunits/__init__.py
@@ -81,6 +81,8 @@
     Resistance as Resistance,
     SpeedArray as SpeedArray,
     Speed as Speed,
+    SqrtFlux as SqrtFlux,
+    SqrtPower as SqrtPower,
     SurfaceDensityArray as SurfaceDensityArray,
     SurfaceDensity as SurfaceDensity,
     TemperatureArray as TemperatureArray,
diff --git a/tunits/core/cython/dimension.pyx b/tunits/core/cython/dimension.pyx
index 8637c58..f9f74a3 100644
--- a/tunits/core/cython/dimension.pyx
+++ b/tunits/core/cython/dimension.pyx
@@ -727,6 +727,50 @@ class SpeedArray(_Speed, ArrayWithDimension):
     """An array of speed values. Standard unit: meters per second (m/s)."""
 
 
+class _SqrtFlux(Dimension):
+
+    @staticmethod
+    @cache
+    def valid_base_units() -> tuple[Value, ...]:
+        return (default_unit_database.known_units['Hz'] ** 0.5,)
+
+    def _value_class(self) -> type[Value]:
+        return SqrtFlux
+
+    def _array_class(self) -> type[ValueArray]:
+        return SqrtFluxArray
+
+
+class SqrtFlux(_SqrtFlux, ValueWithDimension):
+    """A scalar value representing square root of flux. Standard unit: sqrt(1/s)."""
+
+
+class SqrtFluxArray(_SqrtFlux, ArrayWithDimension):
+    """An array of square root of flux. Standard unit: sqrt(1/s)."""
+
+
+class _SqrtPower(Dimension):
+
+    @staticmethod
+    @cache
+    def valid_base_units() -> tuple[Value, ...]:
+        return (default_unit_database.known_units['W'] ** 0.5,)
+
+    def _value_class(self) -> type[Value]:
+        return SqrtPower
+
+    def _array_class(self) -> type[ValueArray]:
+        return SqrtPowerArray
+
+
+class SqrtPower(_SqrtPower, ValueWithDimension):
+    """A scalar value representing square root of power. Standard unit: sqrt(W)."""
+
+
+class SqrtPowerArray(_SqrtPower, ArrayWithDimension):
+    """An array of square root of power. Standard unit: sqrt(W)."""
+
+
 class _SurfaceDensity(Dimension):
 
     @staticmethod

From 9cdff10504b631818a46b1331289381deccb7704 Mon Sep 17 00:00:00 2001
From: Daniel Sank <sank.daniel@gmail.com>
Date: Thu, 9 Jul 2026 11:10:56 -0700
Subject: [PATCH 2/2] Update __init__.py and __init__.pyi

---
 tunits/core/__init__.py  |  2 ++
 tunits/core/__init__.pyi | 20 ++++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/tunits/core/__init__.py b/tunits/core/__init__.py
index 7d91766..42fadac 100644
--- a/tunits/core/__init__.py
+++ b/tunits/core/__init__.py
@@ -80,6 +80,8 @@
     Resistance,
     SpeedArray,
     Speed,
+    SqrtFlux,
+    SqrtPower,
     SurfaceDensityArray,
     SurfaceDensity,
     TemperatureArray,
diff --git a/tunits/core/__init__.pyi b/tunits/core/__init__.pyi
index 71f66ec..ab207a8 100644
--- a/tunits/core/__init__.pyi
+++ b/tunits/core/__init__.pyi
@@ -728,6 +728,26 @@ class Speed(_Speed, ValueWithDimension):
 class SpeedArray(_Speed, ArrayWithDimension[Speed]):
     """An array of speed values. Standard unit: meters per second (m/s)."""
 
+class _SqrtFlux(Dimension):
+    @staticmethod
+    def valid_base_units() -> tuple[Value, ...]: ...
+
+class SqrtFlux(_SqrtFlux, ValueWithDimension):
+    """A scalar value representing square root of flux. Standard unit: sqrt(1/s)."""
+
+class SqrtFluxArray(_SqrtFlux, ArrayWithDimension[SqrtFlux]):
+    """An array of sqrt(flux) values. Standard unit: sqrt(1/s)."""
+
+class _SqrtPower(Dimension):
+    @staticmethod
+    def valid_base_units() -> tuple[Value, ...]: ...
+
+class SqrtPower(_SqrtPower, ValueWithDimension):
+    """A scalar value representing square root of power. Standard unit: sqrt(Watt)."""
+
+class SqrtPowerArray(_SqrtPower, ArrayWithDimension[SqrtPower]):
+    """An array of sqrt(power) values. Standard unit: sqrt(Watt)."""
+
 class _SurfaceDensity(Dimension):
     @staticmethod
     def valid_base_units() -> tuple[Value, ...]: ...