nirnay-

dashansh (chinh dii) haah metrik pranalitil dashansh ekak upsarg aahe joou dahava ghatak darshavito. 1793 madhye prastavit aanee 1795 madhye swikarlela, upsarg lattinmadhun aala aahe, jyacha arth 'dahava' assa hoto. 1960 pasoon, upsarg haah aantarrashtriy ekak pranalicha (ess. aay.) bhag aahe.
upsarg varanvar unit decilitor (dii. ell.) madhye vaparale jaate, jeey khadyapadarthanchya pakakrutinmadhye samanya aahe; anek european gharanmadhye peeth, paanee ityadinsathi decilitor mojmap asate. dhwani patali aanee vidyut pravardhan yasarkhya shakti aanee mool-shaktichya pramananche praman mojanyasathi ekak decible haah abhiyantrikimadhil eka samanya upay aahe.

