Here are entered works on services, commonly called newsgroups and LISTSERV lists, that allow a computer user to post messages to, and read messages from, a group of people who have a common interest, usually by means of the Internet, a commercial online service, or electronic mail. Works on services that allow a computer user to post messages to, and read messages from, a group of people who have a common interest, via a dedicated telephone line established for the purpose, are entered under Computer bulletin boards. Works on services that allow a person, using a computer, to engage in an actual "conversation" with other people in real time are entered under Online chat groups --subdivision Electronic discussion groups under subjects; and names of individual electronic discussion groups
Here are entered works on services, commonly called newsgroups and LISTSERV lists, that allow a computer user to post messages to, and read messages from, a group of people who have a common interest, usually by means of the Internet, a commercial online service, or electronic mail. Works on services that allow a computer user to post messages to, and read messages from, a group of people who have a common interest, via a dedicated telephone line established for the purpose, are entered under Computer bulletin boards. Works on services that allow a person, using a computer, to engage in an actual "conversation" with other people in real time are entered under Online chat groups --subdivision Electronic discussion groups under subjects; and names of individual electronic discussion groups
Here are entered works on the use of electric and magnetic fields to focus and direct beams of electrons. Works on the branch of optics involving the effects of electromagnetism or electricity on light and on the optical properties of materials are entered under Electrooptics. Works on the branch of electronics involving devices that generate, control, transform, transmit, or sense visible, infrared, or ultraviolet radiation, are entered under Optoelectronics
