Oriọna Sodium & Mercury na Ike Volta Ala
GP20Na oriọna na-ewepụta ogologo: 589.0nm, 589.6nm, GP20Hg oriọna na-ebupụta 404.7nm, 435.8nm, 546.1nm, 577.0nm, 579.0nm
Dee ozi gị ebe a ma zitere anyị ya
GP20Na oriọna na-ewepụta ogologo: 589.0nm, 589.6nm, GP20Hg oriọna na-ebupụta 404.7nm, 435.8nm, 546.1nm, 577.0nm, 579.0nm