Isu tose tinoziva kuti kune mavara akasiyana maererano nemapoka akasiyana.Chiedza is electromagnetic wave, zvichienderana nehurefu hwayo, inogona kukamurwa kuita ultraviolet mwenje (1nm-400nm), mwenje unooneka (400nm-700nm), girini mwenje (490 ~ 560nm), dzvuku (620 ~ 780nm) uye infrared mwenje. (700nm pa...
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