| 释义 |
dot 1. The shorter of the two signal elements in Morse code telegraphy, created by closing an electrical circuit with a mechanical key for a short period of time. A dot is audible as a brief click or buzz, called a dit by radiotelegraph operators, and is graphically represented as a small round mark. See also dash, Morse code, and telegraph. 2. Marion Estelle Edison (1873–1965) was nicknamed “Dot” by her father, Thomas Alva Edison (1847–1931), the “Wizard of Menlo Park,” who invented such devices as the phonograph, electric light bulb, carbon microphone, and electric chair. Much of his early work was in telegraphy, and the two-way telegraph and quadraplex telegraph were among his early financial successes. See also dash and telegraph. |