A collection of lamp emission spectra for the white LEDs in a Percival plant-cultivation chamber at different nominal dimming settings.
Percival_LED_dim.mspctPercival_LED_dim.mspct is a "source_mspct" object
containing a collection of 11 "source_spct" objects as members.
Members are named.
Percival_LED_dim.mspct contains a collection of
"source_spct" objects with spectral emission data for different
dimming settings. The diffuser was maintained at the same distance from the
LEDs. Thus, the different spectra are comparable and provided expressed in
calibrated spectral energy irradiance units.
This growth chamber uses as light source a panel of LEDs above each shelf at a close distance from plants.
The variables in each member spectrum are as follows:
w.length (nm)
s.e.irrad (\(\mathrm{W\,m^{-2}\,nm^{-1}}\))
Instrument used: Ocean Optics Maya2000 Pro single-monochromator array
spectroradiometer with a Bentham cosine corrected input optics. A complex
set of corrections and calibration procedure used. The source_spct
objects have attributes with additional information on the measurement and
data processing. Measurements done by Pedro J. Aphalo. Data acquired and
processed using R packages 'ooacquire' and 'photobiology'.
Growth chamber manufacturer: https://percival-scientific.com/.
summary(Percival_LED_dim.mspct)
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