 Ise ụkpụrụ luminescent phenomena bụ: chemi-luminescence nihi nke chemical mgbanwe, tribo-luminescence emepụta site esemokwu, Thermo-luminescence emepụta site okpomọkụ, photoluminescence emepụta site anya ma ọ bụ adịghị ahụ anya radiations nke elu ume mkpumkpu wavelength na cathodoluminescence results si excitation na elektrọn doo na a agụụ ụlọ 