olemus
IEC 80000:
stiimuli selline tase, millest kõrgem võib tekitada ajutise või alalise kahjustuse; sageli sõltub ka stiimuli kestusest
= level above which a stimulus may cause temporary or permanent damage
Note. Damage thresholds often depend on the duration of the exposure to a stimulus as well as the level of that stimulus

näiteid
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3609720/