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Sut yr ydym yn gweld gwrthrychau

Sut yr ydym yn gweld gwrthrychau. BYD. Golau. O ble mae goleuni’n dod?. Ein prif ffynhonnell: yr haul. Ffynonellau eraill:. Trefnu ffynonellau golau. Naturiol v. Annaturiol. Pa rai sy’n cynhyrchu golau?.

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Sut yr ydym yn gweld gwrthrychau

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  1. Sut yr ydym yn gweld gwrthrychau BYD

  2. Golau

  3. O ble mae goleuni’n dod? Ein prif ffynhonnell: yr haul

  4. Ffynonellau eraill:

  5. Trefnu ffynonellau golau Naturiol v. Annaturiol

  6. Pa rai sy’n cynhyrchu golau? Dydy rhain ddim yn CYNHYRCHU golau – yn hytrach, mae’n nhw’n ADLEWYRCHU golau.

  7. Sut ydy golau’n teithio? Ffynhonnell golau • Mae goleuni’n teithio mewn llinellau syth o ffynhonnell goleuni. • Ni all olau basio trwy defnyddiau di-draidd, megis pren, metel, carreg neu berson. • Mae goleuni’n gallu pasio trwy defnyddiau tryloyw, fel gwydr. • Mae defnydd tryleu yn gadael ychydig o olau trwodd, ond dim digon i allu weld yn glir – er enghraifft bocs bwyd plastig, neu papur sidan.

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