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Where an initial alternating current is used for wireless telephony, the current must be rectified first and then smoothed out before passing into the oscillator tube to be converted into oscillations.
It will act upon the basic fact that WHEREVER THERE IS INTERDEPENDENCE, THERE IS BOUND TO BE TELEPHONY; and it will therefore prepare maps of interdependence, showing the widely scattered groups of industry and finance, and the lines that weave them into a pattern of national cooperation. As yet, no nation, not even our own, has seen the full value of the long-distance telephone.
It is natural that one should wonder whether the wireless telephone is destined to displace our present apparatus. This does not seem at all probable. In the first place, wireless telephony is now, and probably always will be, very expensive. Where the wire will do it is the more economical.
Without these, modern telephony would not and could not exist. But Edison, in telephonic work, as in other directions, was remarkably fertile and prolific.
This almost incredible cheapness of telephony is still far from being generally perceived, mainly for psychological reasons. A telephone is not impressive. It has no bulk. It is not like the Singer Building or the Lusitania. Its wires and switchboards and batteries are scattered and hidden, and few have sufficient imagination to picture them in all their complexity.
All this, and yet the men who heard the first feeble cry of the infant telephone are still alive, and not by any means old. No foreign country has reached the high American level of telephony. The United States has eight telephones per hundred of population, while no other country has one-half as many. Canada stands second, with almost four per hundred; and Sweden is third.
Regarding basic telephony, teledensity varies from more than 60 phone lines per 100 inhabitants in the richest countries to less than one in the poorest countries. Fifty per cent of phone lines in the world are in northern America and western Europe. Half of the world's population has never used a phone.
They have seen the value of the talking wire to hold their valley villages together; and so have cries-crossed the Alps with a cheap and somewhat flimsy system of telephony that carries sixty million conversations a year. Even the monks of St. Bernard, who rescue snowbound travellers, have now equipped their mountain with a series of telephone booths.
Nowadays we triumph in our so-called 'discoveries' of wireless telegraphy and telephony, light-rays and other marvels but these powers have always been with us from the beginning of things, it is we, we only, who have refused to accept them as facts of the universe. Let us talk no more about it! Stupidity is the only thing that moves me to despair!"
We need to avoid the mind that shuts the divine up in some far off heaven to be reached only by formal telephony called prayer; that fails to see the infinite in all things in sunlight and flower, in children's laughter, and in misery's wail, in factories and stores, as well as in churches.
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