| 释义 |
phonopore|ˈfəʊnəpɔə(r)|
[f. phono- + Gr. πόρος passage.]
Name of an apparatus by means of which electrical impulses produced by induction, as in a telephone, may be used to transmit messages along a telegraph wire, without interfering with the current by which ordinary messages are simultaneously transmitted.
1886Pall Mall G. 27 May 3/1 The phonopore, the principle of which consists in employing the electrical ‘induction noises’ as motive power to work telegraph instruments, or transmit the voice, or do both at once, is far more remarkable. 1891C. Langdon-Davies Explan. Phonopore 14, I..called the cable coil instrument a Phonopore (or sound passage). 1892Pall Mall G. 27 Apr. 7/2 By means of the phonopore,..the carrying capacity of the existing telegraph wires can be..increased tenfold.
Hence phonoporic |-ˈpɒrɪk| a., of or pertaining to the phonopore.
1886Manch. Exam. 31 May 5/5 So completely is the phonoporic current under control. 1889Times (weekly ed.) 29 Mar. 5/2 Phonoporic messages can be transmitted and received through an ordinary line wire by the phonopore [printed -phoric, -phore]. 1892Pall Mall G. 27 Apr. 7/2 The phonoporic system is as applicable to telephony as it is to telegraphy. By its means a phonopore telephone service may be established on any existing telegraph wire on which ordinary telegraph instruments are already at work, without the two systems in any way interfering with one another. |