It was nice to struggle with some math once again. Some of my knowledge is a bit rusty, but working with it brings it back fast enough. It is also not that difficult and especially if you know what it is good for, a little bit of effort can give really rewarding results: https://www.bbcamping.eu/reflections/the-geometry-of-sunlight/

#sunset #darksky #pvcells #maths #solarpower #homebeforedark #blog #sustainability

#OnThisDay in 1878, Danvers State Hospital, opens; the psychiatric hospital in Massachusetts - also known as the State Lunatic Hospital at Danvers, The Danvers Lunatic Asylum, and The Danvers State Insane Asylum - later served as the influence for #ArkhamSanitorium in the writings of #HPLovecraft, which in turn inspired #ArkhamAsylum of D.C.'s #Batman universe. The hospital was also the setting for Brad Anderson's 2001 horror film, #Session9 and is featured in #HomeBeforeDark (1958).

#OTD