10
BIG
SALE
LADIES' RAIN COAT
-
WHITE SHOES
SUMMER HAT
ALSO
$5. Start
=
$1.00
- $3:00
Remarkable Reductions
in all Departments.
YEE SANG FAT CO.
Hong Kong's Artistic Photographers PHOTO TAKEN DAY AND NIGHT
The
YING MING STUDIO No. 50-52, Queen's Road Central DEVELOPING, PRINTING AND ENLARGING. (Official Photographers of the "China Mail.")
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Satisfaction unsurpased.•
YEE YICK SAND-LIME BRICK CO.,
CHING IU NAM
Factory:-Canton.
Manager.
Hong Kong Office,
148, Queen's Road, West, 1st Floor. Telephone No. C.3882.
"CARNATION" MILK Reliable-Dependable
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Newspaper Enterprise, Ltd. General and Commercial Printers and Bookbinders.
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THE CHINA MAIL.
RADIO TOPICS
A SUPER-HORN.
SOUND CARRIED GREAT
DISTANCE.
there is no distortion in the re- produced sound; this feature being one of outstanding import- ance to accoustic engineers. It is curious to note that, despite the tremendous volume of sound, Motorists along an open road which can be sent rolling among near Pittsburgh, Pa., U.S.A., re- the hills a mile away, the amount cently were amazed by the thun-of electrical energy represented derous music of a brass band by all this sound is only about playing a march, although an 2 watts, or less than that of a empty hillside lay between them flashlight lamp. The apparatus and the nearest building, three- was not especially designed for quarters of a mile away. Despite lightness, yet there is no part of the absence of any visible source it which cannot be carried by of music, they subsequently hand, with the exception of the heard, aweeping forth with full great wooden horn, and even volume and clarity the swelling that can be replaced by a lighter chorde of the pipe organ, the one at some sacrifice of volume in crashing crescendoes of a great the lower pitches. male chorus, piping piccolos, booming bass drums, and velvety voiced violas.
1
to
́RADIO CONGRESS.
AUSTRALIAN REPRESENTATIVĖ
APPOINTED.
HOME-MADE SETS.
of
Sydney, July 21. The Director of Postal Services (Mr. H. P. Brown) has been ap pointed to represent the Common- wealth Government at the Inter
In making this announcement to- national Radio Congress to be held at Washington in October. day the Prime Minister (Mr. Bruce) said the Government considered that owing to the great importance
Many to the Commonwealth of radio com- munication Australia should be re- important phases in which Austra- He was interested would. be dealt presented at the Congress. It was explained by the Inven-with, including the questions of the tors that it is relatively easy to wave-lengths to be used for broad- perfect a reproducer capable of casting, the use of wireless stations public covering the full range of pitches for the transmission of Press mea- The occasion, was a demonstration of the latest form at small intensities. However, sages, the wave-lengths for inter-
wireless. on ships. of loud-speaking device for far more difficult is the problem national stations, and the use
has which
of providing load capacity ade patent
just Clinton quite for the assurance of full been granted R.
Hanna and Dr. Joseph volume at all pitches. Namby- Slepian, the inventors, both mem-pamby basa, the sort often repro-
It would be, Interesting if we bers of the Westinghouse Electric duced, that conveys the sound of Company's research staff. This a feverish moan, was conspicuous
ceivers in use that are home-made. development, which establishes by its absence at the demonstra- could find out the number of re-
tion.
one means, another milestone in the progress
The adaptability of a loud By home-made of acoustic science, is built fundamentally around a type of speaker, of this type to various course, the assembling together of reproducing and radiating device community enterprises of music component parts of the set obtain- or entertainment may readily be ed from radio traders. We are apt to class all sets not made completely called the "exponential' horn.
home-made. the factory 28 The underlying principle of the understood. As applied to an new process is proper coupling open-air concert the horn would Actually there are very few sets necessity for that can properly be called home- eliminate any between the diaphragm and the
There may be and surrounding atmosphere, which is crowding, or feverish jockeying made. Home assembled fe a better the essential feature of improved for positions near the stand. The description.
auditor nearly a mile away would probably are still a few crystal sets mechanical phonographs horn-type reproducers. The new enjoy the concert as well as those that are made up by the enthusins- near the stand. Other major tic and energetic owners from de- a step arrangement has gone
traders, The preparation of the further than any preceding de-applications of the device will be taila supplied by the wireless former, winding of the coil or cofls, velopment in making possible the in large auditoriums and in con-
and making of the connections, and even the cat whisker-all the work reproduction, at full volume, of nection with talking movies. the deep bass of the organ and
of making a crystal receiver, ex- drum. The reproducing element
cept the actual crystal itself that constitutes a home-made set really. is of radically new type, especial-
In some cases, indeed, the actual ly adapted for this horn.
piece of crystal is obtained other than from a wireless shop.
and
WIRELESS NOTES.-
The Radio Research report on the eclipse proves that during periods of darkness reception is better than is relative-in sunlight. But this was known long ago, and there seems no doubt about it.
It was explained by the inven- tors that, although ly easy to perfect a reproducer capable of covering the full range of pitches at small intensities, it is, however, a much more difficult problem to provide load capacity adequate for the assurance of full volume at all pitches. And it is significant that the lower pitches, which constitute the backbone of many musical compositions, are the most difficult to reproduce at great intensities.
The
*
•
It is only the waste of energy in some aerials and sets that could give rise to any dissentient voice. There may appear little difference to some, since in daylight the toss electrons in poorly insulated of aerials and sets is not so great as in the night time, and so things are equalised apparently. It is just like a leaky tap that leaks less when the pressure is least, and so on.
In
of
In the construction of, "home- made" valve: sets one comes acros3
energetic workers who make up the inductances, resistances, and the condensers-all in fact, but the
valves. some art
there
say that We thus can
that Bets can not unreasonably be called some-made sets. But the number of home assembled sets is probably greater. So many traders are sell-1 ing component parts with very com plete instructions for assembly. And there are many "kite" that are really complete pets disassembled or But disconnected, and all ready for The purchasers of
The potentiometer for crystal sete is coming to the fore again.
TUESDAY, AUGUST 30, 1927.
DAILY CROSS-WORD PUZZLE.
(This cross-word puzzle has been made by an expert . but our readers are warned to look out for occasional phonetic spellings, such as harbor, plow, and altho.)
..
5
6
7-18
19
10
11
12.
13
14
15
16
18
19
36
140
42
$46
לון .
150
23 24 25
29
45
ただ
(THE MATERNATIONAL SYNDICATE,
SUGGESTIONS FOR SOLVING CROSS-WORD PUZZLES Start out by filling in the words of which you feel reasonably sura. Then 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 at the numbered squares and running either borizontally or vertically or both.
HORIZONTAL
*---Unwilling t
To delay
11-A palite entertainment. 12-Cotting implement 14-Intermittent faver 15-Sallor
16-Jewels
18-Models of activity 19-Aggregate 20-Path 22-Levy
23-Famous mountains 26-Pronoun
26-Treat contempluously 27-Twistings 20-8welled, out 31-5wamp 33-Otherwise $4-Venomous snake 36-Piece of property 38--Edga
40-Pronoun
44-Man of courage 45--One hundred square meters
46-Departed
47--Misdeed 48-Unit of weight 49--Proceeds Inside 50--Fable
VERTICAL
1-Assault 2-Kind of meat 3--Nobleman
4-food starch 6-Mako Bart
7-T*0
B-Period of time
-Repent of 10-Stop 13-Confuses 17-A digit 21-Burn slightly 23-Apart
24-Drawn 'out
25 Becretion 'from sorea
28-Domestic animala
27--A pan
28-Whits li
26-Name of a President of U. S.
(familiar)
80-Insect
32-Rely
St-Tree
St-Danger
37-Bound
38-Behind time
Matal
41-Fowl
42-Frequently (pontic) 48—American Indian
(The solution of the phove cross-word puzzle will appoar in Monday's issue along with a new cross-word puzzle.)
either to the loud speaker or tele- phones. This is made up of many strands of tinsel wire, which is rather delicate, and should be treated with care.
One of the records used to test the loud-speaker was "The Lost Chord," as sung in the Sesquicentennial auditorium by it must be repeated that the con-assembling.
nections must be correct to get any these kits must constitute a large Make a habit of ordering replace- 2,500 voices, comprising the Ass0-
good result. N.B., the battery con proportion of the listeners. Not elated Glee Clubs of America. nections must be reversed if the re- only in the metropolitan districtments for the "B" batteries, when the voltage of each 45 volt unit The bass of this gigantic chorus ception is not satisfactory. A 4 but in the country centres are there drops to 36 volts. This drop indl
Beta found. Undoubtedly the stood out with impressive inten- dry cell is necessary, and each sity. Nor were shades of pitch pole joined up to the two sides of greater number is in the suburban cates that the battery is nearly at areas. Crystal acts and what the end of its life. Another point or nuance of voice absent in the the potentiometer. Its slider should chords that swept across hill and be connected to one side of the might be termed low-powered valve is that at this stage of a battery's crystal. Next, one end of the poten-sets are plentiful in these parts, life an active chemical decomposi dale adjacent to the pike. fact that the low-frequency notes tiometer with the battery across The owners of the Bets are near to tion takes place in the cells and should be connected to the other the traders, and any difficulties met makes itself known in the receiver were not obtained at the sacrifice and popping noises. New batteries, of course, completely of the high-frequency notes was phones. The slider must be very or in testing it can be remedied as
rectify the trouble. obvious in the closing strains of sharply set and the battery connec-advice is thus easily obtained. "The Lost Chord." The embel-tions made through a switch to be lishments which this chorus ar- broken when not in use and loss rangement gives to the first tenors were heard with utmost
The Thermopile, promised long clarity riding serenely on sub-
Make a habit of cleaning the stantial undercurrents of first since, has not yet been put upon the and second bass and second tenor, market, though further praises of
its advantage in taking the place of solder tips on the prongs of the The ensemble of pipe organ and two volt batteries is to be found in valves once every three months. voices in the Oakley Portugal the wireless papers. It is, after The lead in the solder soon oxidiscs, arrangement of "Adeste Fideles," all, a question of expense versus with the result that poor or in- by the same chorus, was another convenience, for it takes 5ft. of gas different contact is made between number that adequately tested the per hour to run it, and the relative the pin and the contact on the reproducing capacity of the new cost can easily be calculated, rough-valve socket, producing not only loud-speaker. A conversation ad- say, 6d. a week at four hours a unstable reception, but also a lot
day.
avoided.
RADIO HINTS.
of noise that is very often put down to statics, A rub over with some The advantage of the crystall very fine emery paper or the edge over valves la so great, both in res-of a knife is all that is necessary. pect to economy and clearness of re-
Low pitched howls are often
dressed to the auditors was clear- ly understood, even at the great distance intervening, this being a most difficult test surmounted by the device, which produces the ception, that every attempt to im- caused in the loud speakers of neu
effect sound
of 2 horn prove its power for good reception but actually
is should be encouraged. One of the trodyne.sets by careless disposition 14ft. long,
latest (revived) experiments is with of the speaker cord. This should only 48in. in each dimen- four point crystal and double sion. Its name, the exponential aerial. It is reported a success, but horn, is based on the mathema- time will preve tical formulae used in calculating its peculiar internal curves. It is due to this that sound of all pitches, low as well as high, re- celve accurate rendition and cor- rect volume.
WILL RELIEVE MOTHER'S
FEARS.
A panic of fear scizes mother when sudden and severe cramps, agonizing intestinal pains and weakening diar
soms one of the
on no account be placed so that it runs parallel with the earth or aerial wiren. If possible keep the cord at the other end of the set.
Bad reception and crackling noises in receiving sets are nearly always caused by loose or dirty contacts, either in the set or on the batteries. Always look over these points before blaming the broad- casting station or the weather con cause Always avoid, as far as possible than the ordinary loud-speaker neither fear nor alarm. It eases pain kinks in the flexible wires leading almost instantly. Bold everywhere.
Although the apparatus used rhoea prostrate
family. Keep Chamberlain's Calle
in this demonstration radiates and Diarrhoea Remedy in the home ditions. from 10 to 20 times more volume and such emergencies need
YESTERDAY'S SOLUTION,
HANGER A OBLING
THE JEW OFF FUR OCT TRANSIT DIS KIN ANNUL BUT ALT STA LET CÊN VEIN AL PO GIDC CEOS YAN ARA V 091RIS ARNOLD
R S STATE U ONLY AS CB LOMVE TOE GA A UC NEO H DECORATOR N DIA M WOTL WOD DARSMAN OMINOUS ENT AUS MEN OSC
J
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(I'M NOT GOIN TO NEED
ANY LULLABY TO CIT
| ME TO SLEEP-
NO ONE WILL.
HAVE TO ROCK ME TO SLEEP.
THIS IS DELICHTFUL:
1927 BY
KATURE SERVIC
BRINGING UP FATHER.
SHUT UP OR
I'LL ROCK.
YOU
SLEED.
GHOURS LATER-
HEY-JIGGS-WAKE UP YOUR BATH;
IS READY!!
WHERE ARE · WE IF WE ARE ANYWHERE?
THAT WUZA: NICE ISLAND. AT LOW TIDE!
IT WOULO'BE IF· THE OCEAN DIDN'T
USE IT. NOW, WHERE TO?