Ton vanN schrieb am Dienstag, 7. Mai 2024 um 11:02:33 UTC+2: Rereading this thread come to understand that definition/semantics is a critical aspect in this discussion. *Bluntly* summarized: - Sunshine = seeing difference between lighted area and shadowed area. Like KarenK's device is doing - Lightlevel = level of undirected solar radiation, not/hardly differentating on wavelength. Like most light sensors in 'private' PWSes will provide.
There is a third device, the pyrheliometer <https://en.wikipedia.org/wiki/Pyrheliometer>. It is mounted on a solar tracker <https://en.wikipedia.org/wiki/Solar_tracker>. See also direct insolation <https://en.wikipedia.org/wiki/Direct_insolation> (please note the character o in the middle of the word, not u). I am not sure, if "lightlevel" is the appropriate name for that kind of observation type. See global tilted irradiance (GTI) <https://en.wikipedia.org/wiki/Solar_irradiance>. -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/0e06da8c-81a0-414f-a39c-c213f703b830n%40googlegroups.com.
