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Black body is a physical body that can absorb all kinds of electromagnetic radiation. The unique properties of black body is that it emits radiation in thermal equilibrium so called black body radiation. Emitting of black body radiation is followed by planks law. Ideal black body have two unique properties It is an ideal emiter. Emit radiation of any frequency. It is a diffused emitter. It emit isotropically, that is independent with direction

Geodesic Geodesic is a term comes from the word geodesy that means the measure the size and shape of earth. Geodesic is a shortest route between two point on the surface of earth. According to geometry, Geodesic is a generalized notion of a straight line to curved spaces. In general theory of relativity, geodesic is more important. Here curvature geodesic is more considerable than straight line geodesic. The motion of free falling test particle is described in general theory of relativity by geodesic.

Breast cancer is a condition of abnormal cell division of breast tissue. It is one of the most common cause of women death worldwide. Besides of Cervical cancer, Breast cancer is a serious disease in women. Symptom of breast cancer The common symptom of breast cancer is lump in breast, changing shape of breast, excretion of fluid from the breast nipple. Another symptom of breast cancer may be bone pain, yellowish color of skin, shortness of breath. Risk factor of developing Breast cancer The risk factor of developing breast cancer is hormone replacement  therapy, Alcohol, ionizing radiation, obesity and lack of physical exercise. Basically, the responsible gene for breast cancer is BRCA 1 and BRCA 2. These are the inherited gene spread from generation to generation.