هى الدرجة التى بها العدسة , المرآة

هى الدرجة التى بها العدسة , المرآة او اى جهاز بصرى يكون له القدرة على تقارب او تباعد الضوء .و تساوى معكوس البعد البؤرى لأى جهاز ضوئى (P = 1/f ) . كما أن الطاقة البصرية العالية تتوافق مع البعد البؤرى الصغير .

النتائج (الإنجليزية) 1:

Is the degree to which the lens, mirror or optical device with the ability to convergence or divergence of light, and is equal to the inverse of the focal length of the optical device (P = 1/f). High visual energy also correspond to the focal length.

النتائج (الإنجليزية) 2:

It is the degree to which the lens, mirror or any optical device has the ability to be a convergence or divergence of light Portal equal to the inverse of focal length of any optical device (P = 1 / f). The high optical power in line with the small focal length dimension.

النتائج (الإنجليزية) 3:

Is the degree to which the lens, mirror or other optical device is able to converge or diverge light. And the Albry dimension is equal to the inverse of any device Dwyy P = (1 / F). The optical energy is high compatible with Albry dimension small.