How PAR Readings Change with the Time of Day (Student Series)
How PAR Readings Change with the Time of Day (Student Series)
Professor DeBacco
PAR Meter Mode…
Note: The PAR meters have different modes for indoor lights and the outdoor sun so be sure to set it for the light you are intending to measure.
Location
This video was taken on a sunny day during the first week of August in the Northern Hemisphere.
The approximate GPS coordinates are…
41.33 °N, 72.19 °W
which is in Southern New England and the elevation was 50ft. above sea level.
PAR Readings were taken from noon to 7:35pm
As the video progresses you will notice that the data is added to the chart so the summary is at the end. In addition to this not only are the PAR readings shown in video format there is also a still photograph taken that is shown as well. This is intended to show how the setting sun changes and how it relates to the official sunset time for the day. So, even though the actual day-length is a defined amount of hours, the total time of high quality light is important when growers calculate their DLI.
*Due to the description character limit the full work cited for "How PAR Readings Change with the Time of Day (Student Series)" can be viewed at... https://drive.google.com/file/d/1Lrw-...
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