Kapangidwe ka mamolekyulu aZoyamwa UVnthawi zambiri imakhala ndi ma conjugated double bonds kapena aromatic rings, zomwe zimatha kuyamwa kuwala kwa ultraviolet kwa ma wavelength enaake (makamaka UVA ndi UVB).

Pamene kuwala kwa ultraviolet kumawunikira mamolekyu onyowa, ma elekitironi omwe ali m'mamolekyuwo amasintha kuchoka pa nthaka kupita ku mkhalidwe wosangalala, zomwe zimayamwa mphamvu ya kuwala kwa ultraviolet.

Pambuyo poyamwa kuwala kwa ultraviolet, molekyulu imakhala mu mkhalidwe wosangalala ndi mphamvu zambiri. Kuti ibwerere ku mkhalidwe wokhazikika wa nthaka, mamolekyu oyamwa adzatulutsa mphamvu m'njira zotsatirazi:
①Kusasintha kwa kuwala: kusintha mphamvu kukhala mphamvu yotentha ndikuyitulutsa ku malo ozungulira.
②Kuwala kapena phosphorescence: gawo la mphamvu likhoza kutulutsidwa ngati kuwala kooneka (kawirikawiri).

Mwa kuyamwa kuwala kwa ultraviolet ndikusintha kukhala mphamvu yotentha, zoyamwitsa za UV zimachepetsa kuwonongeka kwa kuwala kwa ultraviolet ku zinthu (monga pulasitiki, zokutira) kapena khungu.
Mu zinthu zoteteza ku dzuwa, zoteteza ku dzuwa zimatha kuletsa kuwala kwa dzuwa kulowa pakhungu ndikuchepetsa chiopsezo cha kutentha ndi dzuwa, kuzizira kwa dzuwa komanso khansa ya pakhungu.

ZathuZoyamwa UVndi oyenera ma polima, zokutira ndi zodzoladzola. Ngati mukufuna zinthu, chonde musazengereze kulankhulana nafe, tidzayankha mkati mwa maola 48.