Abantu abaningi bayazibuza: “Uma ngichitha imizuzu engama-20 embhedeni wokushiswa kwesikhumba, isikhathi esingakanani leso siqhathaniswa nokuba selangeni?” Iqiniso liwukuthi, imibhede yokushiswa kwesikhumba ivame ukukhipha imisebe ye-ultraviolet (UV) enamandla futhi egxile kakhulu kunokukhanya kwelanga kwemvelo, okwenza isikhathi esifushane sibe sikhulu kakhulu kunalokho okubonakala sengathi sinjalo.
1. Ukuqina kwe-UV: Ilanga vs. Umbhede Wokushiswa Kwelanga
Ukukhanya Kwelanga Kwemvelo: Emini, ilanga likhipha ibhalansi yemisebe ye-UVA ne-UVB. Ukuqina kwe-UV kuyashintsha ngokwesikhathi sosuku, isizini, nendawo.
Imibhede Yokushiswa Kwelanga: Imibhede eminingi ikhipha ama-UVA angu-95% kanye nama-UVB angu-5%, ngokuvamile ngamandla aphezulu kakhulu kunokukhanya kwelanga kwemvelo.