For an instrument used by the eye, the angular magnification is , where is the angular size of the image seen through the instrument and the angular size of the object seen with the naked eye — at the near point for a near object, in place for a distant one.
বইগুলো এখনো বাংলা ভাষায় পাওয়া যায় না — ইংরেজি সংস্করণ দেখানো হচ্ছে।
Physics · পরিভাষা