The advance that was brought about by Edison's carbon transmitter will be more apparent if we glance first at the state of the art of telephony prior to his invention.
Without these, modern telephonywould not and could not exist.
The pioneer inventor in automatic telephony was the late Mr. Almon B.
It makes possible telephony across the Atlantic: a cable for this service would cost only one fourth more than an ordinary telegraphic cable as now laid and used.
But transatlantictelephony is still a thing of the future.
Though telegraphic messages are transmitted easily through thousands of miles of cable,[16] submarine telephony is at present restricted to comparatively short distances.
A relay in telephony acts very much like one's neighbor in the game called gossip, in which a sentence repeated more or less indistinctly, after passing from one person to another, becomes distorted and meaningless.
In the analogous subject of telephonymany efforts have also been made to render the service secret, and to extend it to great distances by means of relays.
The individual call in telephony is not a success for nearly the same reasons that exist in the case of wireless telegraphy.
There is one simple piece of apparatus in the collection, without which telephony and wireless telegraphy would be impossible.
The common-battery system is the element which has made the present wide development of telephony possible.
The pole changer was redesigned after the beginning of the great spread of telephony in the United States in 1893.
The adoption of more complicated devices and systems in telephony has nearly always followed a demand for the performance by the machinery of the system of additional or different functions.
It appears, as we have said, in every successful automatic system capable of serving more than one small group of lines, and until it was evolved automatic telephony was not a success.
Both telegraphy and telephony over simplex circuits follow their usual practice in the way of calling and conversing.
With so many telegraph wires on poles over the country, it has seemed a pity not to turn the thing around and provide for telephony as a by-product of telegraphy.
Simplex and composite circuits are arrangements of wires wherebytelephony and telegraphy can take place at the same time over the same wires without interference.
It is strange that wireless telephony has not made greater progress, for it may be said, on the word of one of the greatest authorities, that wireless telephony is simpler and easier than telephony through a submarine cable.
I can look back over what I found in the technical books about electricity and telephony and see several other ways for Cuthbert to accomplish the same result.
Following the train he arrived at the first conclusion that an expert in telephonycould devise most any kind of a practical method for opening a window or a ventilator.
Telephony as a practical experience in modern communication revived orality under circumstances of highly integrated, parallel, and distributed forms of human activity on a global scale.
Cellular telephony places us on the map of the world as precisely as the global positioning system (GPS) deployed on satellites.
By means of wireless telephony the transmission of intelligence is far more direct and expeditious, and in times of emergency this not unfrequently becomes a very vital question indeed.
The advantages of wireless telephony over wireless telegraphy are many.
As in wireless telegraphy, all modern systems of wireless telephony are based upon the action of electro-magnetic waves.
To them radio telephony was an accepted fact, part of their daily equipment for carrying on life.
Mr. Hampton was an enthusiast about the development of radio telephony and it was through him the boys first had become interested in the subject.
The Germans were early in the field with radio telephony development, you know.
Scientists attacked the problem with vigor, and various means of wireless telephony were developed, without any being produced which were effective over sufficient ranges to make them really useful.
Telephonic communication was established between them, and thus he had attained wirelesstelephony by induction.
With very few exceptions, the best that is used in telephony everywhere in the world to-day has been contributed by workers here in America.
Just as the telephone was more complex than the telegraph, and the wireless telegraph than the telephone, so the apparatus used in wireless telephony is even more complex and technical.
In the first place, wireless telephony is now, and probably always will be, very expensive.
Wireless telephony must come to the front in the near future, but at first for only very special purposes.
If you wish to understand radio-telephony you must know something of the mechanism by which the voice is produced and something of the peculiar or characteristic properties of voice sounds.
To give you enough of an answer for your study of radio-telephony I am going to tell you first about vibrating strings for they are easier to picture than membranes like the vocal cords.
Sometimes it is called a system of "multiplex" telephony because it permits more than one message at a time.
Telephony and Telegraphy on the Same Wires Simultaneously.
The uses to which such cables are suitable in telephony are not many, as will be shown.
The whole art of telephony hangs on taking thought of things.
Success in automatic telephony did come by the re-adoption of the trunking method.
The Cyclopedia of Telephony and Telegraphy presents a comprehensive and authoritative treatment of the whole art of the electrical transmission of intelligence.
Its presence between the wires of a line and between them and the earth causes one of the losses from which long-distance telephony suffers.
It is largely used in telegraphy, and often in telephony in such cases as require a constantly flowing current of small quantity.
In other words, since its first beginnings, independent telephony has brought into continuous daily use nearly sixteen times as many telephones as were brought into use in the equal time of the complete monopoly of the Bell organization.
The function of the induction coil in telephony is, therefore, mainly one of transformation, that is, either of stepping up the voltage of a current, or in other cases stepping it down.
A perfect screen is of course out of the question, but I believe that with a screen such as I have just described telephony could be rendered practicable across the Atlantic.
Some enthusiasts have expressed their belief that telephony to any distance by induction through the air is possible.
Of course, I have seen the installations on board ship, but the modern wireless telephony seems to me little short of marvellous.
We're inventors, and we have discovered something regarding wireless telephony which will soon startle the whole world.
Just fancy, within a day you have fitted up wireless for us, so that we can actually hear telephony on the Paris airway!
The engineer in telephony cannot increase his motive power.
For many reasons wireless telephony can never take the place of wire systems, but it may be expected to supplement them in a useful manner.
Such broad use is made of the telephone service of America that the progress in telephony is an essential factor in all American progress.
Ultimately, there can be no doubt that long-distance telephony will be regarded as a national asset of the highest value, for the reason that it can prevent so much of the enormous economic waste of travel.
Later he met a prima donna, fell in love with and married her, forsook telephony for ballooning, and lost his life in attempting to fly across the English Channel.
I can see a universal system of telephony for the United States in the very near future," says Carty.
Dom Pedro of Brazil, who befriended Bell at the Centennial, introduced telephony into his country in 1881; but it has not in thirty years been able to obtain ten thousand users.
Of all brokers, the one who finally accomplished most by telephony was unquestionably E.
Telephony has always been in high favor with the Kaiser.
The daily loss from bureaucratic telephonyhas become enormous.
This almost incredible cheapness of telephony is still far from being generally perceived, mainly for psychological reasons.
Sargent, three veterans who know telephony in all its phases; George Y.
The Perkins plan of rapid transit telephony is to prepare a list of names, from ten to thirty, and to flash from one to another as fast as the operator can ring them up.
The German engineers have not kept in close touch with the progress of telephony in the United States.
And fifty per cent, or one-half, of the telephony of the world, is now comprised in the Bell System of this country.
The craze for "cheap and nasty" telephony is passing; and the idea that the telephone is above all else a SPEED instrument, is gaining ground.
It is one of the most incredible miracles of telephony that a passenger at New York, who is about to start for Chicago on a fast express, may telephone to Chicago from the drawing-room of a Pullman.
The wireless telephony tests, though of exceptional interest, did not prove very successful.
It was consequently decided that, for immediate use, wireless telephony was not a practical means of communication.
It was Mr. Hampton, a scientific man enthusiastic over the development of radio telephonylong before the craze swept the country, who had introduced the boys to it.
These two stations not only provided exceptional opportunities for the boys to learn the intricacies of radio telephony but also provided a method of helping defeat the ends sought by the Mexican rebels.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "telephony" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: extension; mouthpiece; phone; receiver; telephone; transmitter
