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THE HONGKONG TELEGRAPH,
RADIO NOTES AND NEWS.
SATURDAY, SEPTEMBER 8, 1923.
New Tub Makes Amplification Urnecessary."
v
That
When girls go to college these days, not all of them want to learn cooking and other household cares, as this picture testifies. Hero, students at Bunier College New York, aro dolving into the mysteries of radio," Dr. A Turner is telling them all about it
The heart of the radio set for 5. The voltage is higher than transmittingand receiving isstill in the ordinary tube, to raise the |-to-be-ruised-lo perfection. That-in-temperature of the filament to
the tube itself.
point at which the potassium In the last two years, during sodium alloy vapor can become which radio has met with the active. greatest popular response in its When the new tube was tested history, the tube has been sub-fin the vicinity of Urbana and ject to change about as often as Champaign, the receiving any part of the radio ap-fans who used the tube in paratus. In fact more so, for their sets reported having heard scientists have realised that this, Kansas City, Atlanta, Sclie the most important part of the set, neetudy and Pittsburg on an or was where they should go for dinary regenerative hook-up with improvement
no amplifier. And with the antenna 12 feet above ground and 40 feet long;
BASEBALL POINTS.
More Questions Answered.
There is a runnar on first base and one man out. With two strikes and two balls on the bat- ter, the runner on first starts to stpalm the next pitch,
The ball is inside, but the bat- fter elects to hit in. He takes a healthy swing, but missos. "As the batter misses the third strike. the pitch is so far inside it ticks the batsman's shirt.
The catcher handle's the ball perfectly and makes an accurate throw to second to get the runner who was trying to steal that base. ; The ball arrives in advance of the runner and the shortstop who handled the throw touched him! with tho bull a foot in front of the duse..
What is the proper ruling ?
THE INTERPRETATION, When a pitched ball at which the batsman strikes and misses, comes into contact with tho' person, of the batsman, the ball- becomes dead."
In the play cited, it happened" the the third strikes
It would have retired the hat-i ter whether or not the ball was caught by the catcher.
The fact that the ball was caught by the backstop, mado, no particular difference. It in no way gave him the right to "throw to second.
The hall was dead when it hit the" batter, and the runner who tried for second and apparently was thrown out, should have been sent back to first base, as no play was possible once the ball became dead..
Inmediately upon expiration of the patent rights on one form of tube, the market began to be By raising the -antenna to a invaded by other forms, some of height of 40 feet, bro adcasting] ELECTRIC BEAN SORTER. which still exist, while others stations as far away as Losi have died a quiet death. Various Angelès could be heard on this! kinds of dry battery.tubes, gas single tube! These stations, tubes and vacuum tubes now the laventors report, could be
Sorting beans by electricity exist, and each has its individual be heard even without a "seems almost like cracking nuts hook-up by which it is supposed battery and with the plate circuit Michigan farnier with the good with a steamhammer, but a to be most effective,
return connected to the negativo| The latest form of tube is what filament lead. 小
uld Yankee name" of Me is termed the "alkali vapor tube," Even this tabe is not the final Williams has invented a machine brought out by Mr. Hugh Award in perfection of the heart which does away completely Brown, associate of the depart of the radio son" for what radio with hand labour. The light ment of electrical engineering, fans want is not only a highly from a bean is reflected through and Mr. Charles T. Knipp, head sensitive and efficient tube, hut 髓 selenium cell When this of the physics department of the one that is cheap and more
colour' is normal nothing happens, University of Illinois. It is a durable.
and the bean passes.on to a wait- detector tube rade só sensitive
ing sack. If, however, the bean as practically to obviate the ne-
Proves a bit off colour, there is a cassity of using" amplifying
change in the electrical con- ductivity of the cell; a magnet The injection of a potassium
raises a finger which pushes the spdium alloy into the tube during
aside into a receptacle! the process of evacuation is said
which awaits its arrival. The to be the whole principle on
Silencing interference same machine has been utilised! which its construction is based. "An end to interference from for sorting olives: the red and It is a complicated and extremely one serious source is promised purple fruit are cast out, the delicate process, however, and is with the advice from Washington green only being allowed to pass therefore costly.
that a
system of "silent According to its inventors, the wireless telegraphy has been tube has the following charac-planned for the government eode toristles and advantages; stations,
tubasz
at any plate voltage up to 60 volts, although it produces best results between 8 and 10 volts.
After the interior of the tube has been brought to the zenith of perfection, perhaps, inventors will seek to produce methods by which it can be produced in hean larger quantities, at lower rates,
:
on.
1. It acts as a sensitive deigetor By this system, code signals will be applied in many of the ex- would by sent on wave frequencies periments by which messages may below that of sounds andible to be increased hy 150 per cent. in the human ear. Thus, a radio fan speed. would not longer be bothered by the constant-ticking and buzzing during the reception of a broad east concert.
2. is more than three times as sensitive the ordinary detector tube,
3. Adjustment is less critical, therefore much easier, than on an ordinary Lube,
That leaves twa serious sources of interference to allish, before the radio fan will enjoy his broad- cast concerts, First is static. Major Joseph O. Mauborgne. Then, local interforence, such as who has been put in charge of the any transmitting station might radio laboratory of the U. S. canse because of its proximity, to| in wave length, and steady, the Bureau of Standards is centre-the receiver. tube is said to give "absolitely ing his attention on this phase of distortionless-reception. This radio development. He will begin subjects for corrrection.
Both of these are being made has long been one of the bugaboos experimenting with wave lengths of radio reception, the correction ranging from 450 to 500 meters.
4. Besides being more seloétive
of which will be received withi Major General George glen by every radio fan.
Foamite Frefoam
0.
4:
Statie eliminators have Been! Throught out, with the hope of}
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14, Queen's Road, Central. “
Tel. Central No 1877.
Squier's fast ende signal system abolishing this natural form of THE HUMAN ZOO
Is the most effective and economical protection
your home can have against the demon-
FIRE!
APPROVED AND ADOPTED BY THE HONGKONG FIRE BRIGADE
FULL PARTICULARS FR ÝM :-
THE UNITED ASBESTOS ORIENTAL AGENCY, LTD.
2, QUEEN'S BUILDINGS
Tel.. Central 238
interference from the atmosphere. Bpt, despite the high hopes placed n such inventions, 'none' has as yet proved satisfactory enough to he hailed as the Nemesis of static. Experiments are still going on at the US. Bureau of Standards Lo! make the static eliminator effi cient enough for practical use.
Better receiving, as well as transmilling, instruments live! have already tempered down it- mospheric interference consider- ably. The static eliminator, or some other such invention, would abolish this altogether.
Local interference from other hroideasting, or individual trans- mitting stations has been. per- hap even more serious than static. Radio fans living near a powerful broadcasting station have had considerable difficulty trying to tune out its, interfer- ence, for some distant programme. One of the many steps to eliminate this form of interfor once is the now system of wave length allocation, by which broad- casters send out their programmes on different wave lengths. De spite this system, however, re- coiving radio fans still experience this form of interference.
The broadcasters themselvés) have been trying to clear the air of this trouble, and have succeeded to some extent. But they have still far to go before they will stop interfering with one another.
Tel Central Na... 1877
SIX OF ONE-
Copyright 1923 03
Pahilo Ledger Or
"My hoavens 1 that looks liko Roscoe Swink. I swear Fread that he died."
"No, Fred, ho got married."
"Well, I knew something serious happened to him."