an optical device for focussing a camera or other instrument automatically

an optical device for focussing a camera or other instrument automatically

an optical device for focussing a camera or other instrument automatically

an optical device for focussing a camera or other instrument automatically

someone in charge of a client's account for an advertising agency or brokerage or other service business

someone in charge of a client's account for an advertising agency or brokerage or other service business

the branch of physics that deals with the emission and effects of electrons and with the use of electronic devices

of or relating to electronics; concerned with or using devices that operate on principles governing the behavior of electrons

of or relating to electronics; concerned with or using devices that operate on principles governing the behavior of electrons

an executive agency responsible for providing economic advice to the President