W.
Page
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WEIGHING THE MOON
87 Observatories Co-operate
Dr. H. Spencer Jones, the As- tronamer Royal, is at the head
stars with the original reference stars."
of the biggest co-operative survey This task was undertaken by which has ever been undertaken. the Greenwich, Cape, Hamburg observatories. The He is the chairman of the Com-i and Leipzig mittee of the International Astro- positions of the stars on their nomical Union which is looking plates are now being measured, and the results are to be co-or- after the Httle planet Eros, which
dinated at Greenwich. three years ago made Its nearest approach to the earth-a "call"
sixteen
million miles some
distance.
Although Eros is only about twenty miles across. it is the only
is planet which bright enough to the and comes hear enough earth for its position to be sur- veyed as the Ordnance Survey understands these things.
But the baseline" of this cele- stial survey is nothing less than the diameter of the "earth, and when astronomers have complet | ed their task they will have
4
In the meantime Dr. Witt, the Berlin astronomer, who first dis- covered Eros, has just completed a calculation of what itä observed path would have looked like from the centre of the earth.
Abstrust though this calcula- tion appears, it is an essential part of the astronomars' pro- gramme. The whole method af "surveying" Eros depends on the fact that its position, even at more than 16 milion miles dis- tance, looks different from dit erent parts of the earth.
Determined the scale of the Greenwich and a number of the entire solar system four times other observatories are now ready more accurately than before, and to take avaritage of Dr. Wile's Weighed the moon, a feat work, They have already mea-. which has always "been regarded sured the distance of Eros from as particularly baffling.
the background stars photograph-j It is a thirteen years job, First ed with it, and can get on with came Ave years of preparatory the task of calculating how much work before Eros was so much as
difference it has made that ther eight months of telescopes were not at the centre sighted; then, observation by 87 observatories of the earth. in all parts of the world; and
Sun's 'Distance Knally eight years, of which ve The final answer." Dr. Spencer are still to run. " devoted to cal-Jones said. "will be. not the dis- culation and the examination of
tance of Etos from the earth, 'bus photographic plates.
the distance of the sun from the earth, in which we are more l
is On the way, and merely as a tenested. The possible error step towards the main objective. now about 50,000 miles in 93 mil- the positions of some thou-llon miles. We hope to reduce. It sands of stars will have been to alquarter of this figure.
'more
The First Task
precisely measured
ever belore,
•
than
All other distances in the solar system will be similarly affected, The Arst task," Dr. Spencer and we shall also know the mass Jones explained to a representa of the moon with greater ac- tive "Was
the of
to
"Morning
Post"
curacy.
ex-
work out the
The mass of the moon comes pected path of Eros across the into nearly all astronomers' cal-
culations. This is - sky.
across
ways moving round their common centre of gravity, which is about three thousand miles up towards the moon from the centre of the earth. In fact, the moon's gra- vitation is pulling the earth, as well as the earth's the moon.
because the "It was then necessary to op-earth as well as the moon is 'l- tain as accurately as possible. the positions of some 900 'background' stars near which Eros would pass in its track first across the Nor- thern Hemisphere and then south the southerri sky. You cannct measure the position of a planet from a photograph unless got something with have which to compare it"
Then, Trg October, 1930, to 87 observatories May, 1931, the taking photographs of Eros on every possible opportunity.
צפת
At the Cupe Observatory alone. where Dr. Spencer Jonas was then Astronomer Royal, as many as 1,050 plates were exposed. Green- wich contributed '330 plates, but the Cape and other southern re- cords, have special "valite because
of at the moment nearest up- proach Bras was in the southern sky.
Even then," Dr. Spencer Jones continued. "the preparatory work was not ended. The original set of "reference" stars were bright Stats, chosen so as to be easily visible in the smallest telescopes which would be used..
Measuring Photograpbs
use
"This again will be a laborious calculation. Since we must the mass of the earth in working out the motion of Eros, all we can do is to "adjust" the value for the sons mais until our re- sults are as consistent as possible. In this way, by trial and error, we shall have learnt also how much the moon "weighs."
2
MORE BOYS THAN GIRLS
BEING BORN
Interesting Figures Published
fr
HONG KONG DAILY PRESS, SATURDAY, FEBRUARY 17, 1934.
AN AERIAL MOTOR CAR”
Inventor's Remark- able Claims
Has the secret of how an insect can hover in the air for an in- definite period been at last dis covered? A press representative has interviewed an elderly man near Ringwood, cottage } Hants, who claims to have dis- has covered this secret, which baffled. scientists for so many years. He sure of his facts building a flying that he is machine-he calls it an "aerial
The
motor car"--based on the prin- ciples of his discoveries. man is Mr. T. A. Dring, who was treasurer to the Washire County Council for many years, and is now 18 years of age.
THE CHINA
COAST
Changes And
Appointments
SUMMER TRAVEL
Reduction In Fares
Menaber lines of the Trans- Pacific Passenger Conference, Am- Capt. J. Legge, sup'y master,erican Mal Line, Canadian Pacifio. Steunsship Co., Dollar Line, Nippon Klating, has retired.
Yusen Kaisha and States Steamship Capt. T. Hughes, from short Company ounce immer fares to wave. has gone command, Hang the Pacific Ocast and Honolulu
and to Japan, effective June Tat.
Capt. H. G. Goddard, acting! master, Hangsang, has gone chief
officer, the same ship.
Mr. W. J. Laurence, chief officer, Siangwo, has gone acting master, the same ship.
Mr. J. Shiel. chief picer. Luen Ho, has gone chief officer. Pingwo Mr. B. J. Walsh, acting chief officer, Hangsang. has gone second oficer, the same ship.
Mr. J. W. E. Warrior, chief officer, Nanning, has gone thier officer. Wenchow
Mr. E Hardman,, supy chief picer, Wanhsien, has gone chief
Mr. J. Worsley, sup'y chter offi- cer. Talyuan, has gone chief officer, Wantung.
Mr. J. H. Forbes, suply chief off cer, 'Wanhalen, has gone chief om- cer, Chinhua.
"I decided to study the night of the hovering insect," said Mr. Ering, as it the mast iierfect. flying object I can conceive. Acer, Nanning.
by studying far back as 1911 principally the Aight of the drone By I discovered that the wing, instead of flapping up and down, goes round and round, but I could not find cut then how the Insect was supported. The
that the two wings solution is are centrifugal fans. which caused two streams of air to Impinge against each other. The impact releases compressed air. and the expansive force of the compressed air lifts the insect.' "SUCCESSFUL EXPERIMENTS
. Dring then explained that he was applying his discovery to 'the building of his aerial motor car. He decided to substitute for the wing motion a revolving shaft with two three-bladed rudrs and by gradually experi- menting with small models be obtained a lift df 9oz. With an experimental fuselage and a 25 h.p. engine he has already ob- tained a lift of 450 lb. Mr. Dring took the reporter into his work- shop and showed Him this "aerial motor car" in the making. The fuselage had a flat under surface. against which the compressed
alz created by the rotors will act as a liquifer. The forward motion is to be obtained by inclining the axles of the rotors in the same manner as an insect, and the steering, is by rudder,
Mr. D. Smith, supy officer, from gone chief ofcer. reserve, has Langchow.
Mr. S. L. Garrett, sup'y chief officer, from short leave, is on re serve.
Mr. C. E. Duncan, second officer, Yinchow, is on reserve.
Mr. R. E. Selwyn Jones, second, oncer, Kueichow, has gone second officer, Yingchow.
il
Mr. B. F. Burger, second officer, Liangchow, has resigned.
Mr. G. E. Brand, second officer, Kanchow, has gone second oficer,
Taiyuan.
Mr. J. Storey, 'second office Newchwang.. has gone second off- cer, Ninghai.
Mr. J. G. Lincoln, sup'y second- officer, from special leave at home.. has resigned.
Mr. L W Harrison, second offi- cer, Siargwo, has gone acting chief ufficer, the same ship. :
Mr. T. Fairbairn, second officer, Kungwo, has gone second officer, Siangwo.
Mr. J. G. Davies, second oficer, Luen Ho, has gone second officer, Pingwo.
Mr. G. M. Fawcett, second officer, Hangsang. has gone third oficer, the same ship.
Mr. H. Campbell, thief engineer officer, from special duty, is on re-
The fares to the Pacific Coast
apply to First Class, Cabin Class, Second Clase asd Tourist Clay and give an 8 per cent. reduction on the retarn fare. Sale dates are from June 1 until July 31st with a return limit of September 30 by which site the passenger must be on the vessel bound for Hongkong. Those attractive Mires are put in to enable people with a two month Holiday to take a trip to the Unit- ed States or Canada.
The fares to Japan are to be based on one and a half fares, applying only to First Olsss. They will be on sale from June 1 until September 30, with a return limit of three months and a final limit of October 31st. These fares are the stint as those in effect the last fow years, over which time they have proved very popular with the travelling public.
Elstree Gossip
Wally Lupino, who has just com- pleted a role in the new British International film featuretta" "Wish- es says that his Hre's motto is Live and Let Live." His Hobby Is fishing, and so if he never really caught as he sulll has to explain away the worm.
Erize Lotinga, the well know British film comedian of several British International success♪s bas| one great ambition. He wants to see his son make a bigger named than he has himself.
Lester Matthews, husband of the lovely Arin Grey, and himself one¦ of the leading actors BIP's new spy drama “On Secret Ser- vice" says that his greatest anibi- tion is to own a film studio. But his rule in life is “Eat, drink and be Merry." Either his bidon or his motte will have to be shang-
I want people to understand." the inventor said. "that this is entirely a new method of aging. I have tested the soundress of my invention by every possible Mr. F. Hill, chief beer off-ed 'one day. means, and the results make itcer, Slangvo, is an reserje certain that a flying machine can Mr. Robson chief engineer now be built that will be a true aerial motor. possessing the power, of vertical ascent and descent with ability to stand still in the air."
officer, Leesang, has gone'chifer en- gineer officer, Biangwo.
Mr. R. B. Robertson, second en- gineer officer, Leesang, has gone acting chief engineer, officer, the same ship.
Mr. J. Moalem, from reserve, has gone acting second engineer off-
For the Frst time in the history of the Marx Brothers and their screen career, one of their films has a very definite story. He.etofore,cer, Leetang. they have just romped and clowned in front of the camera with gag after gag, but in "Duck Soup" they the rail plot.
...
Mr. T. Curry, second engineer cfficer Yochow, has gone asst,' en- gineer officer, in Shanghal.
Mr. Mr. C. E. Stuart, second en- ineer officer, Shuntlen, has gone sup'y second engineer oficer, the
Briefly, it concerns Freedonia, Among other interesting facts land of happiness und peace, which brought to light in the Registrar-is in the throes of a revolution. same ship. General's Statistical Review, 1932 Despite the high taxes, the coun- Mr. K. D. Gibson, acting second Tables, Part 1, just purbished at try's treasury is depleted. It wante engineer officer., Kwelyang, has two shillings, are the following:- to borrow money from Miss Dy-gone third engineer officer, the
The population of England and mout, wezlthy elbilen. But the same ship.
Wales has passed the forty million | Teftises bo lend thêm thy wifees The Mr. A. W, Norrio, sup's second Some of the telescopes tookmark, having advanced to 40,201,-1 Tędrids, Progles) ve Tighter, Riffus engineer officer, from short leave, photographs on such a large scale 000, as at the middle of 1932, from 7 Firstly, played by Groudio, is has resigned. that they did not include enough the 1931 census figure of 39,952,377.appotted theater,
Mr. E CO. Bird, asst. engineer
Teference Éts from which "the ·Marriages solemmised in England The trouble is formented by the officer, Yochow, has gone second position of Eros could be measur- and Wales during 1982 numbered ambassador of the neighboring ed. So a further series of photo-307,184, against 311,847 in the pre-country, who wants to buy Free-engineer officer. Ewelyang.
Mr. W. PCameron, sup'y second graphs had to be taken linking vious year.
donis. But when Groucho gets in engineer officer, Klating, is On
action begins. And the
home leave. .. method by which the Four Brothers!
Mr. J..C. Baker, sup'y second en- clown their way through receptions,gineer officer, from in transit, has war and court martials furnish gone second engineer officer, Shun- many laughs.
up
""
Sixteen males and 758 females power, some thousands of fainter
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married at the age of sixteen, and while the sixteen males married females up to nineteen years of age (except in one case, where the female was twenty-two), the 758 females married males of varying ages between sixteen and fifty years.
The number of decrees nisi made absolute was 3,894, an increase of 130 over the number for the pre- ceding year.
tlen.
Mr. A. B. Brown, third engineer officer. Yochow. Bas gone acting second engineer officer, the same ship.
Mr. T. L. Mitchell, asst, engineer officer, Yochow, has gone acting third engineer officer, the ship... Mr. D. G. Comrie, asst, engineer officer, Yochow, has gone fr. third engineer officer, the same ship.
Mr. H. McD, Watson,- sup'y third engineer officer, from in transit, has gone sup'y third, engineer om- cer, Wanhalen.
The proportion of the sexes in Mr. H. WR. Marks, suply third the births registered was 1,059 engineer oficer, from short leave, males to 1000 fèmales, a. ratio hig-has gone acting third engineer her than any during the previous officer, Liangchow, ten years!
Parliamentary electors on the 1922 Register for England and Wales number 12,440,109 males, and 13,- 999,804 females, a total of 28,439- 713.
DOG RACING
MEETINGS: Saturday, 9.15 P.M.
Sunday, 9.15 P.M.
$2 Pari-Mutuels; 81 Cash Sweeps,
ADMISSIONS: Members Stand 81, Public Stand 40 cents,
Capt. H. C. Liu, from short lenye, has gone command, Kiang Yu.","
Capt. An Chi Pong, acting mas- ter..Kiang Ya. 1 on reserve
Capt. Wong Hung Chal, from short leave, has gone command, Tu Shan
Capt. B. from reserve,
has gone acting master, Ka Ho
Capt. Jahnsen, acting, mas- ter, Ka Ho, is on reserve.
Mr. Jack U. Lee, from "short leave, has gone second officer, Kiang Hein.
Mr. Bheng Tsen' Shou, second officer, Tung Wah, is on short leave.
Mt. Tu Pu Han, has gone acting second officer, Tung, Wah.
- ME. Kăng Tao Chow second en gineer officer, Yu Shun, is on short leave.
Mr. Chang Yu Bung, ačting third engineer, oficer, Yu Ghim, has gone acting-second engineer omcer, the came ship.
Mr. Bino has gone acting
thira engineer: otcer, Tu Bhim
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