Angular cheilitis is an inflammatory condition that causes red, swollen patches on the corners of the mouth. It can be caused by certain fungal or bacterial infections and typically responds well to ...

Cold sores are a symptom of oral herpes, which is caused by the herpes simplex virus. Angular cheilitis is less common and has several different causes. Each condition is treated differently. Mouth ...

This course introduces the quantum mechanical concept of angular momentum operator and its relationship with rotation operator. It then presents the angular momentum operators, their eigenvalues and ...