Quantitatively : reciprocal of the value ( generally in minutes of arc ) of the angular separation of two neighboring objects ( points or lines ) which the eye can just perceive as being separate 定量方面:任一空間分辨力的測定結果,例如觀測者恰可察覺分離的兩個相鄰物體(點或線或其他特定刺激)的用弧分表示的角度間隔的倒數。