KIBU2023-02-032023-02-032022-07-28http://erepository.kibu.ac.ke/handle/123456789/7677SPC 221:Physics opticsenAttribution-NonCommercial-ShareAlike 3.0 United Stateshttp://creativecommons.org/licenses/by-nc-sa/3.0/us/SPC 221:Physics opticsSPC 221Physics opticsOther