Just what re Doctor the
Needs!
47.
"TWO-WAY TALKIE" by Dictograph
[Complete -20% Intrument
Provides immediate two-way con- versation between doctor 1 and nur. Suve's time, steps and on. ergy. And you install it yourself in Ave minutes Guaranteed for one ymur. Aha 4-WAY SWITCH for four point communication,
Sale Distributors
E. OTT & CO., LTD.
French Bank Bldg.
Robot Gives "Gen" On
The Weather
A robot Is a leading charac-information as extremes of tem- ter in a new U.S. Weather Bur-perature, ranges of humidity, ent service. It gives businesswinds, solar energy, dust content, men a map showing the possibi- of 'the air, rainfall, depth of Iltica the weather.
know, or combinations of wind, The new service is called "ap-lee and snow. plied climatology."
Statistics It was de-
for one
locality, veloped during the war, when gathered for GO years, might generala demanded knowledge of fill freight car. but the weather conditiona far in ad- weathermen punch only those that relate in the particular problem they are trying to solve,
vance.
11
It has been discovered that
follow weather conditions "pattern." This pattern may be found if weather statistics for number of years are studied carefully.
I also has been found this pattern may be projected far into the future-not in the form of a positive forecast, but in terms of the mathematical por. sibilities that certain weather conditions will prevail.
When the panched carda are completed, the rulot takes the spotlight. He la similar to many of the business machines used In offices. The punched cards. are fed to him. Ile digests the subtracts, artds. statistics,
Then divides, and multiplica he turns out his map.
It may contain the names of 50 or more towns in a certain
region. Bekide each town the A elreus may plan to visit robot has printed a numieral. Inola. It has a choice of two The number beside one city may
"GA." towns for the first week of Sep-be
This means the lember. A study of the weather changes are 50 to 1 the weather pattern shows the chances are 50. will be suitable for the buainena 60 It will rain in Quincy, 111, project that is being studied. say, the first week in September. In Decatur the chances are 90 In 10 It won't.
Vital Need
The method in some instancea has been found 90 per cent ac- The odds are based on curate, Ita possibilities [ur statistics gathered throughout) farmers, businessmen, and in- the Northern Hemisphere sinen dustrialists scem virtually un- 1890 Some regional statistics limited. are more than 100 years old.
More than 1,000,000,000 items of information Hrc available from the weather records of the Northern Hemisphere.
Data Assembled To obtain the weather pattern Cor 23 locality, a team of meteorologists assembles
Weathermen tong ago recog. the data concerning that locality onnized their value in estimating punched cards.
The eards may contain such
future-weather patterns, but it was an almost impossible task to use them OR a wide scale when pen and penell or adding machine methods lune nvallable. complicated
were
'SOUTH CHINA BUILDING MATERIALS tem might have taken months
LIMITED.
The Directors of SOUTH CHINA BUILDING MATERIALS, LTD. beg to announce that the Company was incorporated on the 27th of May. 1947, under the Companies Ordinance, 1932, and is now ready to enter into contracts for the supply of cement concrete bricks, blocks, tiles, Spunerete pipes, and Hollow Blocks, manufac- tured under Patent Licence.
All enquiries should be addressed to the Managing Director, South China Building Materials, Ltd., Room 204, Hong Kong Shanghai Bank Building: Tel. No. 30238.
ROBERT STEEN SMITH,
CUPIC FELT
15 CAPACITY
Chapman
Secretary.
constant "STILL-AIR” freezing
tinent.
THE CHINA MAIL, THURSDAY, AUGUST 21, 1947. T
ENGINEERING: Continued from Page Eight
INTRODUCTION
ELECTRONICS
TO
A Specialised Branch Of Electrical Engineering
First some approach towards a definition. What is meant by Electronics? Spelt with a capital E. and illuminated by imaginative journalism, vivid if not very, technical, Electronics is almost anything you wish. It is a magic carpet, transport to the brave new world. It is Alladin's lanp, brand new th the shape of a little radio valve. And so on. All these metaphors carry their weight of partial
truth, for much of electronics, still being de- veloped from day to day, appears both novel in the scientific wor'd in 1807 by conception and as it really is quite remark-.J. Thomson, and honoured able in its wide sphere of application. But to by their manifold employment the man with more practical interest, the in-in this their jubilee year.
Our observer is, familiar nl- dustrial engineer and the business man, all ready with the princip'e that these highly coloured definitions and descrip- opposite charges attract tions are apt to be a little distasteful. Worse, other while similar charges re- they are unhelpful because they invest what is pel. He can see this now in ac
mainstay of an important branch of applied science with tion as the very
But world order. sub-atamic something of the glamour more appropriate to the film star.
ench
In
that order by no means scoms a precisely rega'ated one. substances like glass or rubber the atoms, interlinked into large molecules, preserve their formal arrangements almost Intact, but
So for the hard-headed man that sort of stuff will not do. Better, for the first grasping after a de- finition, to seize upon that phrase "an import- ant branch of applied science." Important, be it added here, not only for what it offers as in-tricity, in fact-there is some- mediate utility, but for the way in which it en-
tu metala-conductors of clec-
ming noticeably different going on. Electrons leave home. They wander freely and almiessly in the metal, co'liding and boun- eing in all directions. and Bo getting nowhere in particular although they travel athundreds of miles a second.
and without railway! But with that electronte knowledge; how evar, even the best analogics are
unnecessary.
*Page 9.
Demand For British Instruments.
Selentine instruments írt 'An demand throughout the world in greater numbers that before World War II, as war-timo dis Loveries have produced many valuable innovations, of all kinds in this sphere, and the production of scientific instruments has in. |creased four-fold,,
The oMcial figures for the ex. Bort from Britain of these articles
during the Arst four months of.
this
Issued.
year recently jave been Thié production figures for the corresponding four menths of 1938 are quoted as a guide in brackets.
ap.
Medient and surgical instru. menis exported totalled a value of £182,915 (932523), photographie The flow of electrons in
£123,085 apparatus
(£30,800), conductor is the current. Elve-
cinematographic and tolkle trona can be made to leave h
paralus £06,742 (210,008), ond materia-as already describod,
optlenl instruments, Including for instance, by the agitating camera lenses, £223,257 (£54,345), influence of heat. The free These are only some of the most negative charges can be attract important fires quoted to show ed, can be sped across a vacuum the general trend. and can be collected by a posí- This increase in world demand, tively charged plate, bringing which is also an open acknow. hem back once more into the tedgment of the quality of these metallic circuit. The flow of British products, holds equally for other instruments, electrons in the vacuum is the good turret. This is a simple which have been greatly develop. the electronic process. and straightforward account of ed as a result of research
(Continued next weck)
Wire
and
Improved methods of manufac.
Luze,
Recording
THE NEW, BETTER WAY TO }
RECORD SOUND BY
THE PEIRCE MAGNETIC WIRE -
RECORDER
when weeks counted
Now it will be
- riches all the sciences from which it has sprung, possible to frarry on studies nu a wholeraĵo. If electronics be understood, fnow in hand, bith will be need basis. The service is being then, as a specialised branch or d-one to enter the little world developed slowly, however, and extension of the ordinary elee-and one for an escape back to it will be a long time before it trien' engineering which is at our own, First let us diminish. can be widely expanded.
rendy so familiar, at once a' retaining, on'y a visitor's diplo The chief of this new section, better perspective will have matic privilege, and scientific Dr. Woodrow C. Jacobs, was the been obtained. It is a branch licence that we may record the Whenever any material be- chler civilian meteorologist for in which practical development facts as though they were, In-conies hunted, the general atomic the US Army weather service was fate: it seems almost an deed, the results of observation, mavement increases, whether i
turing the war
As the observer contracts, the the material be gas, liquid oi addition to the main body of Military tenders who wanted electrical engineering. But ful-objects around him appear to solid. Numbers of the wander- to save men in beach landings ter knowledke will show all the grow. First the child's point of ing electrons under this agita. and win air battles demanded to physical sciences to be interview comes back like an echo. tlng inuence may shoot right know far in advance what the connected, and early and late Then comes the world rather as out of the material and leave It! weather risks would he,
merely the accidents of time. the fireside cat sees it, and then, a'together-n "thermionic" or| The Allied High Command
Nevertheless, by defining the worm's eye view-just as heat emission of electrons takes wanted to know, as early as electronics IIM part of that it was expected renly, with the place, Again, when a supply of 1942, where and when the best larger selence in which electric polished floor poor and rid; extra electrons is forced one weather conditions would preity is harnessed to serve the gay looking surfice. Down tỷ for instance, the bustling is vail for an invasion of the Con- will of man, one has only beg the stage when a hair looks like end of a piece of metal a wire ged another and larger qucation a cable, and the jagged-looking similarly increased, but from what in c'ectricity? It all be edge of a newly-ground razor being entirely random it takes Eisenhower Helped
comes rather reminiscent of the blade is a sight better avoided. on a general purposeful direc Dr. Jacobs says the climatolo old belief which held that the But the process of shrinkage tion. Pressed on as it were by prints. armed with European world was supported on the has much further to go, until the inflow of electronic visitors. weather records, were able to back of a mighty elephant. The nt 'nst those things are seen there is an overall flow of elec tril Gen. Dwight D. Eisenhower problem of a support for the which man has a the odds were 24 to 1 against clephant was readily solved-henamed in his textbooks-the tronic flow,
confidently irons along the wire. This alec. this directional "iden1" conditions for a Nor-stood patiently upon a giant molecules of matter, the 'small- drift, is the process which, in mandy landing In May, 13 to 1 tortoise.
eat units of any given substance the larger wor'd.. is called an in June, and 50 to 1 in July.
Electricity, fortunately, yields which are sti'l hall-marked with electric current-and reference By the time the Allied armies somewhat more satisfying an- the character of that substance to the larger work suggests an were ready for the invasion in swers, since for more than twa! and the atoms of the different immediate return to it, so that 1944, the generals had had their thousand years philosophers | elements which go to the build electricity in action may be re weather information for months. and scientists have not only ing up of all the materials whichgarded again from the more They waited until the last day theorised upon the subject, but exist. The observer is now com- comfortable and familiar view- in the "favourable-weather" have destroyed and rebuilt petely invisible to us, while to point of everyday life. period designated lay the their theories, each step leading him that small coin teft lying on elimatologists, fune G. Dr. forward to new and more re-a table is as big as a s'ice cu. Jacobs says the
weather be fined instruments to prine out į right across the world at the
National City Bank of New York Buliding, haved in just he 1947
the the hidden secrets. Today equator.
Tatil comparatively recent 2. Queen's Road, Central, | weathermen had predicted.
It great mass of knowledge Journeying still further into times engineers were largely This freshly developed skill exists. Knowledge of the naminuteness, he sees the single concerned with the flow also greatly increased armen's Lure of thingsmass, motion. atoms and the groups and cus- e'ectricity in metallic cireuita. chances of good weather over radiation and time itself. The ters of atoms in ceaseless move Electricity flowed along wiren targets. The weathermes were platform upon which the torment and vibration. In what he and, behaved as a most useful THE ENVY OF EVERY HOUSE-PROUD WIFE quick to realize it also coutoise stands is certainly not the
had previously called solids the servant within the discipline of help bualnoysmen and farmers object of the sciential's search movements is somewhat limited. closed circuits. This was in peace-time
today--it is n search for an al- but in liquids and still more so main application: There were Forecasts
embracing interpretation of the in gases wild and rapid move, such things as nature's display Dr. Jacobs emphasizes that way mutter as we know it perment seems perpetual, disorder of lightning or is meeker coun- this new climatological service forms. And it is electricity in seems the only order. This tarvart produced in the labora- has nothing to do with another particular which gives cohesion movement blurs even the bound-tory, but these were not quite
Electrons
of
ito
protects your food freshness! detects the Weather Bureau to this interpretation, making aries between one substance and so declle and, like various other
Tel. 23580.
->>> DEHYDRATION (drying out) is the greatest enomy of frozen foods. This is completely stopped by the Chapman "built-in" still-air feature. Write for our descriptive folder.
Come in and see the Chapman
Freezer now on display at:
ENGINEERING CORP.
TOMIN RADIO &
45, Hennessy Road, Hong Kong
ME FREEZER
Sole Agents: GETZ BROS. & CO., INC.
Exchango Building
"Hong Kong.
DON'T MISS YOUR GOOD CITANCE! ·
Come To KWONG KWONG STUDIO & CO.
Take Your Photo „Mern-You WIJI Got A Largo Oll-Colour Picture FREE.
Developing, Printing, Enlarging:de:Natural Oil-Colour
Portrült, Bervice
No. 342. Nathan Road, Jak Roor, (Next To Malentio _Theatre),
"TU" 59470
•
Because this service lan't of benefit to the whole public, the businessmen or the group of farmers or industrialists who want it have to pay the cost
surely attained the very ideal of
The Nucleus
electron
flow. An electron stream pro- duced by any means was, in effect, a current and in this lay the kernel of electronic en- kincering,
act up. The job of this it applicable to the study of another.
pecullur electrical effects, they other department is long-rangeving matter or to the differ-
Finally, he is able to perceive Were not of such direct use as forecasting, I forecasts the Ence, say, between a piece of the atom iteef as a kind of the current which it lamps or weather days in advance. granite and a pound of super-universe of its own,. The vast grove motors. Nevertheless, all
The climatological service heated scam. doesn't pretend to be able to say, Man has, first, his five senses this sense of universe and he were partially understood and spaces within the atom give him these curious electricar.. effects weeks ahead, that it will ne will to guide him in making a catanotes the Interplay of stabills were the object of painstaking. not rain on a given day. It logue of nature. Very useful}
research. and study-study simply states the chances. senses, but sometimes unreliable ing forces across those apuces enormously furthered by the
| The scientific instrumenta which. Only one of the machines now and far from constant as ho has taken with him on this development of the Is at work, Now Orleans, La. tween one individuul and the
theory, which presented direc Eventually it is planned to have next. He has a'so fine balance journey, and which have now tional electron "drift as the at least seven major climatologt- and microscopes, great astro-miniaturisation" are produced essential feature of current cal centers, with climatologiats nomical telescopes and a whole for work. assigned to all large cities. It host of similar extensions of may take. 10 years to expand to his own power. With these he that size.
has built up his pleture of the universe, but he has aucceeded
In the hydrogen atom, which
For means were developed to in completing it only by turn.
e'ectron Ing from the immense to the he examines first because it ap
to have the Pars
simplest produce Just such minute; to the smallest possible
streams outside metallic com. particles, so small that though structure. there is a massive
ductors.. their presence
may be traced, central nucleus, and whirling on
orbit around it. Is what he de- Freed from the conventional they themselves have never been tests as a negative charge of circuit confines yet under com.
electricty.
The nucleus, he plete contro, the current could "Enter It"
notes, has an equal, but opposite pass, for instance, through a Now by far the best way of charge, so that the atom as a vacuum or a gas.The circuit medy, is now being manufac of the infinitely amal is to en-in all the other atoms which make but the gap that appeared in it understanding, the wonderland whole is electrical'y neutral. was still as "complete": an ever, It was still a "closed" circuit. ter it and look around for one-up all possible materiale he can Chemical Industrien in such quan self. This, it will readily bond cal varictions on this theme: was bridged by current alone, tiles that 100.tums can be export- understood, can hardly be done more complicated central nuc el. Now without the insight gl Just under two years ago prowol be made to Alles, a young of negative electricity whirling trons, this might seem
In practice, but application may more and still more "particles" ed from our knowledge of elec The three chemists, Dr. F.H.S. girl que experienced in the ex-in clouds about them. The most mysterious as the Indian ropb Curd, Dr. D.G.. Davey and Dr. ploration of Wonderland. Alice, striking discovery is that all the trick performed entire'y with T.L. Rose, to whose joint rescares it may perliapa bo remembered, | specks of negative electricity an invisible rope It-is-com- work the world is Indebted for found a cake and a potion, one are identical, quite regard'ess parable, with the passengers on this wonder, drug, have heon of which made her grow big of the type of atoni to which the Flying Scotsman shooting Edinburgh other, amuller and they belong. They are the eloe from London tö awarded the British Society of ger, the Apothecaries" Gold - Médale smaller For the exploration trons, formally announced to without conell, without engluo
· Paludrine'
Paludrine, the only really offer. tive synthetic anualarlà
10.
tured by Britain's Imperlai
ed unnually.
duction was nil,
Been.
an
от
In Handling Dictation, the Wire Recorder simplifies and lightens the work of both excentives and their secretaries. Dictation discussion is accurately recopiled without effort, and played back for transcription with incompatable clarity. Remote Control mikes and cables are provided for dictation at a distance of 60 to 100 feet from the Recorder. Earphones facilitate confidential or "open office" play back when desired."
For Full Information and Free Demonstration write or enll
REISS, BRADLEY & CO., LTD.
Tel: 28000/7
This compact tunteen of cullerles within the reach of every pocket.
BEST A.1. QUALITY E.P.N.S.
Made In Sheffield,· England, the Home of the Best Cullers.
G Meat Kulver & Forks, 6 Medium Knives & Forks,
0 Soup Spoons, 0 Dessert Spoons & 6 tea Spoons, and
a set of Carvers with Stect Sharpener.
Packed neatly In a solid and handsome.
Very reasonably priced.
сове
Solo Agents: RELIANCE TRADING CO., LTD.
Tel. 25240
David House.
APE