Surgery in which lymph nodes were removed. For example, surgery for breast cancer often involves the removal of one or more nearby lymph nodes to check for cancer. And this can cause lymphedema to develop in the arm. Radiation therapy or other causes of inflammation or scarring in the lymph nodes and vessels.
Definition of antigravity. : reducing, canceling, or protecting against the effect of gravity.
Emissivity is a term describing the efficiency with which a material radiates infrared energy. A blackbody has an emissivity of 1.00 and no other material can radiate more thermal energy at a given temperature. An object with an emissivity of 0 emits no infrared energy.