Telegraphy, by W.H. Preece and J. Sivewright. 3rd [sic] ed |
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Página 38
... signals or sounds ; and the formation of these signals , by means of the action of currents of elec- tricity upon permanent magnets , upon soft iron , and upon electrolytes , ' forms the next portion of our subject . 44. Telegraphic signals ...
... signals or sounds ; and the formation of these signals , by means of the action of currents of elec- tricity upon permanent magnets , upon soft iron , and upon electrolytes , ' forms the next portion of our subject . 44. Telegraphic signals ...
Página 56
... signals . Period or full stop Repetition or ? Stroke , or the divisional bar ) of a fraction Hyphen Apostrophe There are many other signals in use , but they are excep- tional . Some of those indicated above are rarely employed in ...
... signals . Period or full stop Repetition or ? Stroke , or the divisional bar ) of a fraction Hyphen Apostrophe There are many other signals in use , but they are excep- tional . Some of those indicated above are rarely employed in ...
Página 139
... signals are to be sent , the switch - bar is carried to a ; to this same terminal one of the bars of the manipulator м is connected , and in this way the signals are sent direct to the cable without influencing the galvanometer G. 147 ...
... signals are to be sent , the switch - bar is carried to a ; to this same terminal one of the bars of the manipulator м is connected , and in this way the signals are sent direct to the cable without influencing the galvanometer G. 147 ...
Contenido
CHAPTER | 1 |
Electric quantity 3 Units 4 Electrification positive and I | 7 |
needle instrument 50 Induced coils 51 Double needle | 57 |
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Otras ediciones - Ver todas
Telegraphy, by W.H. Preece and J. Sivewright sir William Henry Preece,sir James Sivewright Vista completa - 1876 |
Telegraphy, by W.H. Preece and J. Sivewright William Henry Preece, Sir,James Sivewright Sin vista previa disponible - 2016 |
Telegraphy, by W. H. Preece and J. Sivewright William Henry Preece,James Sivewright Sin vista previa disponible - 2015 |
Términos y frases comunes
action adjustment apparatus armature arrangement brass cable carbon causes cell circuit conductor connected contact points copper sulphate cores covered wire creosoted current flows Daniell cells Daniell's battery deflection depressed direction disc disconnected distance distant station dots duplex earth-wire ebonite effect electricity electromagnet employed England fault fixed galvanometer gauge gutta percha hole inches induced inserted instrument insulation iron wire joint latter leakage Leclanché cell length lever line current line wire local battery magnet means messages metallic mile Morse motion moved needle number of wires ordinary paper piece pipes placed pole porous portion position potential principle purpose receiving relay reverse rheostat screw sending sent short circuit shown in fig side signals soft iron soldered sonorous vibrations Sounder spring strength switch tangent galvanometer telegraph terminal terminal station test-box th real tion tongue transmitter tube vary Wheatstone bridge words per minute zinc plate zinc sulphate