An ellipse is the set of points whose distances to two fixed points, the foci, have a constant sum; half its longest diameter is the semi-major axis , and a circle is the case where the foci merge. A planet’s orbit points nearest and farthest from the Sun are its perihelion and aphelion.
বইগুলো এখনো বাংলা ভাষায় পাওয়া যায় না — ইংরেজি সংস্করণ দেখানো হচ্ছে।
Physics · পরিভাষা
Ellipse কী?
অন্য নাম: focus (of an ellipse) · semi-major axis · perihelion · aphelion