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Documentation of the MK⁻¹ unit of measure #2390

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Oct 30, 2024
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Documentation of the MK⁻¹ unit of measure #2390

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Documentation of the MK⁻¹ unit of measure
andrewfg Oct 29, 2024
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adapt based on reviewer feedback
andrewfg Oct 29, 2024
c683a7b
tweak
andrewfg Oct 30, 2024
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7 changes: 5 additions & 2 deletions concepts/units-of-measurement.md
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Expand Up @@ -206,7 +206,7 @@ SI (base unit symbols):
| Speed | Knot | kn |
| Temperature | Kelvin | K |
| Temperature | Celsius | °C |
| Temperature[^](#mired-footnote) | Mired | mired |
| Temperature[^](#mired-footnote) | Mired | mired or MK⁻¹ |
| Time | Second | s |
| Time | Minute | min |
| Time | Hour | h |
Expand All @@ -221,9 +221,12 @@ SI (base unit symbols):
| VolumetricFlowRate | Cubic Metre per Hour | m³/h |
| VolumetricFlowRate | Cubic Metre per Day | m³/d |

<a name="mired-footnote">^</a>: Technically, mireds are the reciprocal of Temperature, but QuantityType and NumberItem will transparently convert between mireds and Kelvin.
<a name="mired-footnote">^</a>: This unit is used to indicate the color temperature of lights.
Technically, mireds are the reciprocal of Temperature, but QuantityType and NumberItem will transparently convert between mireds and Kelvin.
This technicality might be a problem if you are using mireds in rules.
Be sure to use the `toInvertibleUnit` method on QuantityType, rather than `toUnit`.
The name 'mired' is a colloquial name and unit symbol for 'micro reciprocal degree'.
The unit has subsequently been adopted by the SI committee as 'micro reciprocal Kelvin' with the colloquial name 'mirek' and the unit symbol 'MK⁻¹'.
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Metric Prefixes:

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