olemus
IEC 80000:
stiimuli tase, millest kõrgem (või madalam) tekitab enamikule inimestest ebamugavust
= level (above or below) which a stimulus is known to cause discomfort for most human beings

näiteid
https://discourse.ladybug.tools/uploads/default/original/2X/b/b846d99d74222fccc61cd9eec0093ab4d7b7b815.pdf
https://re.public.polimi.it/retrieve/handle/11311/971648/73701/Pre_print_VisualComfort.pdf
https://discovery.ucl.ac.uk/id/eprint/10044030/1/1-s2.0-S2095263516300528-main.pdf