---
title: effectiveWavelength
framework: sensorkit
role: symbol
role_heading: Instance Property
path: sensorkit/srphotoplethysmogramopticalsample/effectivewavelength
---

# effectiveWavelength

A temperature-compensated wavelength estimate in nanometers that the emitter produces.

## Declaration

```swift
var effectiveWavelength: Measurement<UnitLength> { get }
```

## See Also

### Accessing optical data

- [emitter](sensorkit/srphotoplethysmogramopticalsample/emitter.md)
- [activePhotodiodeIndexes](sensorkit/srphotoplethysmogramopticalsample/activephotodiodeindexes.md)
- [signalIdentifier](sensorkit/srphotoplethysmogramopticalsample/signalidentifier.md)
- [nominalWavelength](sensorkit/srphotoplethysmogramopticalsample/nominalwavelength.md)
- [samplingFrequency](sensorkit/srphotoplethysmogramopticalsample/samplingfrequency.md)
- [nanosecondsSinceStart](sensorkit/srphotoplethysmogramopticalsample/nanosecondssincestart.md)
- [conditions](sensorkit/srphotoplethysmogramopticalsample/conditions.md)
- [SRPhotoplethysmogramOpticalSample.Condition](sensorkit/srphotoplethysmogramopticalsample/condition.md)
- [noiseTerms](sensorkit/srphotoplethysmogramopticalsample/noiseterms-swift.property.md)
- [SRPhotoplethysmogramOpticalSample.NoiseTerms](sensorkit/srphotoplethysmogramopticalsample/noiseterms-swift.struct.md)
- [normalizedReflectance](sensorkit/srphotoplethysmogramopticalsample/normalizedreflectance-15f2k.md)