Definition of Indicator telegraph. Meaning of Indicator telegraph. Synonyms of Indicator telegraph

Here you will find one or more explanations in English for the word Indicator telegraph. Also in the bottom left of the page several parts of wikipedia pages related to the word Indicator telegraph and, of course, Indicator telegraph synonyms and on the right images related to the word Indicator telegraph.

Definition of Indicator telegraph

Indicator telegraph
3. (Mech.) The part of an instrument by which an effect is indicated, as an index or pointer. 4. (Zo["o]l.) Any bird of the genus Indicator and allied genera. See Honey guide, under Honey. 5. (Chem.) That which indicates the condition of acidity, alkalinity, or the deficiency, excess, or sufficiency of a standard reagent, by causing an appearance, disappearance, or change of color, as in titration or volumetric analysis. Note: The common indicators are litmus, trop[ae]olin, phenol phthalein, potassic permanganate, etc. Indicator card, the figure drawn by an engine indicator, by means of which the working of the engine can be investigated and its power calculated. The Illustration shows one form of indicator card, from a steam engine, together with scales by which the pressure of the steam above or below that of the atmosphere, corresponding to any position of the engine piston in its stroke, can be measured. Called also indicator diagram. Indicator telegraph, a telegraph in which the signals are the deflections of a magnetic needle, as in the trans-Atlantic system.

Meaning of Indicator telegraph from wikipedia

- semap**** telegraph which uses pivoted indicator arms and conveys information according to the direction the indicators point, and the shutter telegraph which...
- and the most widely used of a number of early messaging systems called telegraphs, that were devised to send text messages more quickly than physically...
- or paddles. Signalling by means of indicator pointers was called semap****. Early proposals for an optical telegraph system were made to the Royal Society...
- the moving parts of the telegraph. The regulator could take two positions (horizontal and vertical) and each of the indicators could take seven positions...
- or more handles, and an indicator pointer on the face of the dial. There would also be a revolutions per minute (RPM) indicator, worked by a hand crank...
- frequently use traditional indicator words in a misleading manner. A cryptic crossword on the back page of the Daily Telegraph on 14 March 2012 included...
- (similar to a transparent water-filled flexible tube used as a level indicator), thus limiting its range to the hydraulic pressure that could be generated...
- Telegraphy usually refers to the electrical telegraph, but telegraph systems using the optical telegraph were in use before that. A code consists of a...
- terrestrial semap**** telegraph, which uses pivoted indicator arms and conveys information according to the direction the indicators point and was po****r...
- Message precedence is an indicator attached to a message indicating its level of urgency, and used in the exchange of radiograms in radiotelegraph and...