Nikola Tesla Articles
Lights Lamp 6 Miles Away by Wireless
Signor Marconi Announces His Latest Achievement in Electricity.
HOPES TO HEAT HOUSES TOO
Inventor Devoting Attention, However, to Perfecting His New Telephone.
Special Cable Despatch to The Sun.
LONDON, Feb. 9. — It is announced that Signor Marconi has succeeded in lighting an electric lamp by electricity through the agency of wireless at a distance of six miles. A bulb was attached to a receiver connected with an aerial receiving wire. The transmitter was linked up with a 100 horse-power apparatus, and as soon as the power was applied the lamp lighted and remained lighted so long as the power was kept on.
The experiment brings a step nearer realization Nikola Tesla's prediction of long ago that houses would eventually be Illuminated by electricity caught from the air by masts on the roofs, and Signor Marconi hopes that it will be the forerunner not only of lighting but of heating houses by etheric waves. At present, however, Signor Marconi is giving his main attention to aerophony. He said to-day:
"I am now aiming particularly to obtain a distinctly audible message. This is really more valuable than spectacular calls for long distances. I have been able to communicate quite easily and clearly for a hundred miles, using the ordinary receivers and apparatus which are very like the ones usually used on telephones. The difficulty is with the transmitter, which is very heavy and needs two men to carry it."
Signor Marconi concluded by saying that he hoped to have direct aerograph connection between Belmar, N. J., and Carnarvon, Wales, completed in a few months.
Signor Marconi ridicules the theory of M. Duroquiere, a French scientist, that when wireless waves meet at a half way point they are the cause of great disturbances and that the Volturno and other disasters were caused by interference of Herzian waves. Marconi says wireless waves do not meet.
Nikola Tesla, who ten years ago was called the father of wireless telegraphy, said last night that he did not believa Signor Marconi had been able to light an electric lamp by wireless at a distance of six miles.
"Not that it cannot be done," said Mr. Tesla. "I have done it myself. I did it about fourteen years ago, when I lighted electric lights at some distance from my laboratories without the means of wires. But I think Signor Marconi's plant is not sufficient enough to accomplish any such result."
Tesla first predicted the transmission of messages and power without the means of wires in a lecture delivered before the National Electric Light Association in St. Louis in 1893. He said at that time, in speaking of the "transmission of Intelligible signals, or perhaps even power, to any distance without the use of wires," "I am becoming daily more convinced of the practicability of the scheme."
Four years ago electrical power and light were transmitted without wires from the shops of the Union Pacific Railroad in Omaha to the Omaha exposition grounds.