The term '' power '' is also , however , used to express the ability of a lens or other optical device to focus light .
But the term '' power '' is also used to express the ability of a lens or other optical device to focus light .
But the term '' power '' is also used to express the ability of a lens or other optical device to focus light .
اجعل الجملة بسيطة: The term '' power '' is also , however , used to express the ability of a lens or other optical device to focus light . خرج: