snibsnib·3 maanden geleden·discussThe article has nothing to do with atmospheric CO2, it is about using CO2 as a proxy measurement for virus transfer.
snibsnib·6 maanden geleden·discussI have a $5 ESP32 board that does the same, my phone is just the UI!
snibsnib·8 maanden geleden·discussI used to work in a paint lab. Things things that also affect perceived color include:- Undercoat color- Number of coats- Gloss Level- Size of colored area- Surrounding Colour- Combination of tinters used by each brand. (Different tinters can make colours metameric)- Light Source (Incandescent, D65, LED, Fluorescent)- Monitor Color Space (sRGB, DCI-P3)- Color Space / Model used for conversion (Lab, Luv, Lch)- Colour Difference dE Model Used (CIE76, CMC, CIE00)- Precision and spectral range of the spectrophotometer used.Etc
snibsnib·9 maanden geleden·discussIts mathematically derived. A0 is exactly 1m2 in area. The side lengths are at a ratio of sqrt(2), that means you can cut any A paper size in half and get the size below it. B series are the same ratio, but B0 has a width of 1m instead.