Absorber: The absorber is the active surface in a solar collector. The absorber can be made of various materials and often the surface is applied with a selective coating that allows solar short wave (solar heat and light) to transmit, while long wave heat is reflected. Upon absorption, the solar energy transforms from short wave into long wave energy.
Acceptor: It is a dopant atom (from group III of periodic table) that when added to a semiconductor can form a p-type region.
Adhesion: It is an extremely thin layer of molecules (as in gases, solutions, or liquids) to the surface of solid bodies or liquids with which they are in contact.
Adsorption: It is a process where a solid is used for removing a soluble substance ...