Imiterere ya molekile yaUtwuma dufata UVubusanzwe ikubiyemo imigozi ibiri cyangwa impeta zihumura neza, zishobora gukurura imirasire ya ultraviolet y'uburebure bwihariye bw'urumuri (cyane cyane UVA na UVB).

Iyo imirasire ya ultraviolet irabagirana muri molekile zifata, electron ziri muri molekile zihinduka ziva mu mimerere yo hasi zijya mu mimerere yo gushyuha, zigakurura ingufu z'imirasire ya ultraviolet.

Nyuma yo kwinjiza urumuri rwa ultraviolet, molekile iba iri mu gihe cy'ibyishimo hamwe n'ingufu nyinshi. Kugira ngo igaruke mu gihe cy'ubutaka gihamye, molekile zifata amazi zizarekura ingufu mu buryo bukurikira:
①Impinduka idashingiye ku mirasire: hindura ingufu mo ingufu z'ubushyuhe hanyuma uzirekure mu bidukikije.
②Fluorescence cyangwa phosphorescence: igice cy'ingufu gishobora kurekurwa mu buryo bw'urumuri rugaragara (gake cyane).

Mu kwinjiza imirasire ya ultraviolet no kuyihindura ingufu z'ubushyuhe, imirasire ya ultraviolet igabanya kwangirika kw'imirasire ya ultraviolet ku bikoresho (nk'amapulasitiki, irangi) cyangwa uruhu.
Mu bicuruzwa bikingira izuba, imiti igabanya ubushyuhe bwa UV ishobora kubuza imirasire ya UV kwinjira mu ruhu no kugabanya ibyago byo gutwikwa n'izuba, gufotora no kurwara kanseri y'uruhu.

IbyacuUtwuma dufata UVbikwiranye na polimeri, irangi n'amavuta yo kwisiga. Niba ukeneye ibicuruzwa, twandikire, tuzagusubiza mu masaha 48.