Although internal medicine focuses on diagnosing and treating disease, injury or other conditions related to internal organs, the practice does the same for external body parts, also. Doctors who practice internal medicine can specialize in both organ health and external conditions.
A plastic colander. A colander (or cullender) is a bowl-shaped kitchen utensil with holes in it used for draining food such as pasta or rice. A colander is also used to rinse vegetables. The perforated nature of the colander allows liquid to drain through while retaining the solids inside.
Calender machine for electrode pressing in Lithium-ion battery manufacturing. A calender is a series of hard pressure rollers used to form or smooth a sheet of material such as paper or plastic film. In a principal paper application, the calender is located at the end of a papermaking process (on-line). Those that are used separately from the process (off-line) are also called supercalenders.