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RADIO TOPICS
TELEVISION.
MACHINE FOR THIRTY POUNDS.
A
The new year has begun with a marvel the televisor, machine for seeing by, electricity-. telephone for the eye-as Mr. John L. Baird; the young Scotsman who has invented it, explained in an interview with a representative of the "London Observer."
"How long," he was asked, will it be before it can be brought into the home?
"We are arranging," he said, "to put a simple television machine on- the market within the next twelve months. It will cost £30; and those who have it will be able to look-in' and to, ses by
TO-
"
ATMOSPHERICS PREVENT CONTINUOUS SERVICE.
"Quite suddenly," he said. "after RUGBY TO NEW YORK many months of continuous search the final difficulties wore overcome, and I had the very grant pleasure of, sealng upon the screen of the receiver a living image with light and shade and detail-true. television at last."
The Invisible Ray...
Wireless telephony between Lon- don and New York has been accom- plished at
exceeding £1,000,000.
2 cont
There la yet much to be overcome before the system bacomoв perfect for working the round of the clock, but engineers are confident that at- mospheric worsies, so bothersome at present will be beaten.
A demonstration of this result Was given last January before members of the Royal Institution. At that time, however, the mem- beru, had to.ait bafore the transmit ting screen in a blaze of such in- tonge light as to causa considerable discomfort to the eyes and it was recognised that before the appara-
Telephony by wireless was ac tus could be brought into the sphere complished a quarter of a century of commerce it would be necessary ago,, but it was then in such a. form to reduce this lighting to: normal. as to be impracticable for ordinary in a few months Mr. Baird had ae-commercial usage. I had to awalt complished what was necessary and the advent of the thermionic valvo, had reduced the lighting, to normal the invention which has revolution- ised the arts and practices of com- wireless personsstudio, brilliancy,
munication. speaking at the broadcasting ata- tion and to watch their movements.
It was while he was concentrat- We have been experimenting for Bome Bime between Motographing on this effort that the idea oc House, in Upper St. Martin's curred to him to usé rays outside
He experi- music or speech received from the lane, "and our research station at the visible spectrum. Harrow, and scenes are now being mented at first with ultra-violetearinl. It is just in this function broadenst regularly. With the ap-Frays, but they, too, while possess of magnification that the valve has pileation of greater power distanceing an exceedingly powerful photo-assisted the development of wireless. electric effect, were very bad for telephony, Commencing with quite will be no barrier."
It then occurred to him a small size, such as is used in the the eyes.
broadcasting receiver of to-day, the to try the infra-red raya.
valve has been increased in power "This idea," he said, "was,
year by year until to-day we have think, impressed upon noticing one day from the roof of the large power valve transmitters my laboratory in Upper St. Mar of 200 kilowatts capacity which are tin's-lane the well-known phono-in service for the telephony Between menon of the rays of the setting London and New York. sum turning red, which la due to the fact that all rays except the
"So that soon we may hope to he seeing across the Atlantic
"At present I am afraid I am not at liberty to say anything about that possibility: but I may say that there is no scientific reason what ever why it should not be done."
The time is also approaching. Mr. Baird says, when television theatres, will be built. They will contain a
Alli
RADIO MACHINE LOCATES PRECIOUS METALS.
ino
The use of a radio machine, recently invented, which indicated the presence of nen-magnetic metals is respon sible for the finding of the hiding place of the trengures neized by Jean Lafitte, Barathrin buccaneer at the base of an oak tree near the beach of the Gulf of Mexico. The find, said to be worth thousands of dollars, was contained in a wooden kog. The machine is passed over the ground until the spot is found where the loudest sound waves are The emitted, thus indicating the presence of the metal.. machine can penetrate to a depth of nine feet beneath the surface of the earth according to the inventor.
by
Most people are familiar nowa; days with the advantages of valves. in a broadcasting receiver in am- the plifying and making louder
..
With ordinary line telephony the
the line characteristics are known circuit conditions are constant, and to, a high degree of accuracy, 80 than a long distance connection can te engineered with certainty. With In wireless link in the system, how- ever, was known that fading" and "atmospherics" were two very troublesome factors, and the first efforts were directed to carrying cut experiments in order to deter mine the grade of the wireless con- ditions at different times of the day and at different seasons of the year. These systematic observa- tions have now been continued for over three years, and the conditions which have to be met are" known, Side by side with this observation work has proceeded the installation 'of the 200 kilowatt telephony trans- mitter at the Post Ofce Station at Rugby.
{་
TUESDAY MARCH 15,
DAILY CROSSWORD PUZZLE.
(Thia, arusb-word pussia has bath made by dit ezper" but our readers are warned to look out for nosssional phonetis spellinge, such as harbor, plow, and altho)
187
12
15
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120.
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23
124:
36.
t
149
HORIZONTAL
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1-Profix Nib 7-Farewell
40
43
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47 M8
©THE INTERNATIONAL SYNDICATE.
HORIZONTAL. (Cont}{.
38-F.8 view
40-Regular
42 Me (Franch
To make correctione44 No (Boot.)
In:
43-Esquiro (abbr)
12-Publio vattiala 13-Te out oft 14–8) #iver, 'N; E. Spotland
15-A month 17-The most competenti 20-A. province of
Canada (abbr.) 21-The shoulder-blade 22-Two backs of Bibla
(abbr)
23-To behava 26-The most orippled 27-A, tonyear period: 31-To overpower 35-Prefix To 36-Courteous.
37-Personal; pronoun
[46–Girl's name.
47-Banasth
49-To destroy the
contents of 80-Greek geddema of
the dawn
VERTICAL..
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(Latin-abbr.)
- Mohammadan
sovereign:
4-A Kingdom: bat,
Tibet and India Thêm (opiloan) 6-Indoherent úproar 7-To rovile..
VERTICAL (Cont.) 8-Excavated 10-Born (Fronch) 11-Plece at household. furniture (ph) |$5-Conjunctioni Glandor 18-Naisy; blustering 19-A small bird
Son (Boot) |29-Prafix,
26-To consuma 27-Pat 2-Dropay 29-in motion [30-Oldest
31-A.govor o diagutu 32-Bears; toleratae, 33A Mohammedan
prinda...
34--A: Dolor 89-A farm animali 41-To (Boot.} 46-Prefix Good [48-Not any; none
SUGGESTIONS FOR SOLVING CROSS-WORD PUZZLES
Start out by Alling inthe words of which you feel reasonably sure... Those will give you a clue to other words crossing them, and they in turn to still others. A letter belongs, in each white space, words starting of the numbered squares and running either horizontally or vertically or both
The solution or the above cross-word puzzle will appear in to-morrow's issue along with a new cross-wurd puzzle.)
graphs show a deficit of £1,299,214. The telegraph service during the last 14 years. has lost more than $21,000,000.
Although the fight against atmos- phurica has progressed rapidly, they are not completely overcome, and it a to be expected that there will be occasions, when the circuit will be unworkable. Further, the pheno- menon of fading occurs, shortly after the time of sunset each day. This phenomenon is associated with the passing of daylight into dark- nese, and is not within powers of Office is £6,667,882 an increase of control, but it is frequently sum- 41,238,288. ciently serious to put the circuit
oat of commission until the fading: is over,
11
The total surplus of the Post
LISTENERS.
When it le remembered that the The numbers of steners on "World cost of the Rugby station was about December 1 laat, atutes half a million pounds, that a similar Radio," in various European coun- station is in Use in America, and tries, were as follows:- that, in both countries separate re- Great Britain
Germany Sweden
ex-
screen, but neither orchestra nor red rays are absorbed by the atmos
Each will be linked by wire phere. The dissipating effect ofceiving station and long and to a central broadcasting station, light is very much greater with the pensive trunk linen are required be-1 where, artistes and orchestra will violet rays and the rays at the up-fore a conversation can take place, be engaged. "Simultaneously at per end of the spectrum. and it it will be understood that the charge. various centres audiences will see occurred to me that the Infra-red for such a conversation must de the piece performed and hear the rays could be turned to advantage high. It has been fixed at the outset at 15. for a three-minute call with players and the music.
in television.
36 for each additional minute.
.
The Romance of Television. Mr. Baird's invention, is largely due to what must have seemed to be at the time a piece of downright bad luck. He was in business as an electrical engineer, when he had a very serious breakdown in health and had to give up his business and go to live at the seaside. With any amount of spare time thore he went back to what, as a boy at school and at Glasgow University, had been his old enthusiasm television.
Once more he started experi- ments. This time," he said, "they went more easily than when I first began them. I had unlimited time at my disposal, and the experience gained in many years of research work."
The First Shadow, From one end to, the other of a little room above a florist's shop at Hastings, which he used az A laboratory, ho transmitted shadows the first "being the shadow of a Cross. It was only, a short step towards television," he said "but it was an Important step, and a very encouraging one."
Uses in Warfare, s "These Infra-red rays are of scientists, course, well known to and their properties have been in- vestigated, but their application to
WIRELESS MONEY.
£981,674 Paid for Elcences.
ひ
1
iz
television produced the somewhat There were approximately two startling result that it is possible million licensed wireless listeners. by means of the immensely sensitive on March 81 last, according to the electric eye of the televisor to see Post Office accounts, just issued,
date an object in what appears to the for the year ending this
4083,674 was received from the sale äuman eye to be pitch blackness.
"I was very pleased to have the of the 108. licences. opportunity of giving another de- This figure is subject to adjust- monstration before members of the ment in respect of outstanding fees Royal Institute a few days ago and and other items, and $784.306 is the showing them that television can be amount given as the sum received. produced not only with mormal Of this £600,000 went to the British Broadcasting Company, as. against lighting, but also in total darkness."
What advantage has total dark- £472,003 in the previous year. ness?" Mr. Baird was asked!
The service provided a surplus- "For normal television," he said, or profit, as it would be described "ordinary lighting is more effective; in a profit-and-loss instead of but the use of the infra-rad rays revenus account of £187,383, com. will, I think, prove extremely use-pared with £54,846. ful in warfare for picking out not merely at one spot, but over wide distances, the movements of troops, ships, and aircraft."
221,000,000 Loss.
A
A heavy loss is again shown on the working of the telegraphs, the service which, as "The Daily Mail" has frequently pointed out, has to carry at a loss Prese telograms for newspapers and agencies that could afford to pay adequate rates. "And would the enemy "have not Whereas the postal section show- way of getting out of the invisible ed a surplus of £7,416,288 (án in- ray, and overcoming it1"
crease of £804,153) and the tele "There is no way at present, but phone service a surplus of £550,880 somebody, will probably invent one." (an increase of 287.324), the tele
"Has anyone else the secret?" "No one so far has demonstrated From shadows an advance was į television either with or without made in six months to the transmis-light." slon by the light reflected from them of the images of actual objects. The most difficult atep of all was that from simple cutlines to images. with detail and shading,
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