Read Edit View history 光速 guāngsù speed of light Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 光速 guāngsù speed of light the speed at which light waves travel, approximately 300,000 kilometers per second in a vacuum Edit Delete References Add reference classifier 光速/光速 → 条/條 Edit Delete
光速 guāngsù speed of light the speed at which light waves travel, approximately 300,000 kilometers per second in a vacuum Edit Delete