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凸透鏡 Convex Lens

Egilea:Alex CHIK

Drag the grey/ red points to change positions of the object. Drag the black point to change source of light.

GeoGebra 互動數學教室 http://www.geogebra.hk

Baliabide berriak

Aurkitu Baliabideak

Aurkitu Gaiak