Anaongea vitu ambayo havipo
Kiza, tunajua tu baada kukosa nuru. Kwahiyo, kiza haiwezi kuwa kinyuma ya NURU. Kama kupima kiza uwezi hila utasema tu utasema certain amount of light lambda -ve unapata giza.
Mfano kama BARIDI hakuna kitu kinachoitwa BARIDI, ni neno ambalo linaelezea ukosefu wa...
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