DUBARRY'S HIGH CLASS PRODUCTS Characterised by Daintiness and Charm, Bath Crystals, Soaps, Perfumes, Poudre, etc., etc. The Hall-mark of Quality, New Stooks constant- ly arriving.
THE HONGKONG TELEGRAPH,
WEDNESDAY, JUNE 10, 1925.
FLAFEER FANNY says
Radio Notes & News.
THE COLONIAL DISPENSARY. believes will materially advance If you stand on the end of a
Telephone 0. 1877.
lá, Queen's Road, Central,
TUCHER BEER
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A WONDERFUL FLAVOUR WITH THE FULL TASTE OF THE CHEERY.
SOLE AGENTS:--
CALDBECK MACGREGOR & CO., LTD.
15, Quoon's Road, Central.
Telephone C. 75
One of the most treasured possessions of friends far. away is a photo of their dear ones overseas. The Ming Yuen Studio is fitted with the most modern photographic equipment and will be pleased to show you specimens of their work.
THE MING YUEN STUDIO (Battery Path.)
Cficial Photographers to the "H. K. Telegraph."
TO WORK IN COMFORT DURING THE DAY. AND REST IN COMFORT DURING THE NIGHT.
USE
SKET OCIDE and quickly rid the Office and Home, of all' MOSQUITOES. FLIES. SANDFLIES, Etc., Etc. SKETOCIDE kills all insects.
SKETOCIDE is pleasant in use
SKETOCIDE "is nonstaining
THE
SKETOCIDE is nonpoisonous. PHARMACY.
Asiatic Building 26 Queen's Road Contral, Tol. 345.
M. Y. SAN & CO., LTD.
PRESERVED CHOICE TELECTED BEST YOUNG STEM GINGER THIS KID UP WITH CARE MY SAN & CA 20 MADE IN HOMEKERO
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HL.M. The King, tasted and ordered a supply at the recent Wembley Exhibition,
HEAD OFFICE: No. 92 to 100, Queen's Road, Central,
Television by Sound: Dr. D'Abbo's New Mothod. Dr. Fournier d'Abbe hsa com extremely small fraction of an plated an apparatus which ho inch in length.
the study of televisión. It has pior and drop a wiro into the been privately exhibitad at tator, wavon will pass you by, Westergate House, Kingston on and in doing so will leave a Thames. Designod to transmit minuto fraction of moisture on 30 simultaneous sounde indepon-the wire.afew dently of one another on the same radio-wave-length, and to sopar ate them at the receiving station, it is not yet sufficiently amplified to attempt the reproduction of notual daylight scenos. Artificial ligt was used, and only the rough outline nt moving objecte wore transmitted to the receiving station in another room.
Dr. d'Abbe's method consists in converting the picture or scone which is to be transmitted into a number of musical sounds, cach note representing an element or patch of the picture. The notos are all transmitted simultanoous- ly over the eamo wiro, or on the samo radio wave-length. At tha roooiving station the notes are reconverted into light by moans of special compound resonators invented by Dr. d'Abba, Euch resonator consists of a hollow Vessel with an opening over which a mica reed is mounted. The reod is provided with small mirror, and when the ap proprista note occurs in the sound transmitted the reed vibrates, and produces a patch of light on ground-glass screen. This patch reproduces one element of the original picture.
a
The apparatus at Westergate House is limited to 30 different patches and the same number of resonators. Before a recogniz- ablo pieturo can be transmitted a larger apparatus must be con- structed, for a single human face requires at least 400 elements or patches of light to appear on the screen. The conversion of the original picture into sound is made by a revolving disc having many circles of small holes. Selenium colle are placed at different points in the optical image of the disc, and so arrang- ed that each cell is illuminated by intermittent light of a different frequency. A two-valve amplifier converts tho electric pulsos furnished by the selenium cells into sounds.
Dr. Fournier d'Abbo is shortly to describe this method to L meeting of the Radio Society of Great Britain.
SLOW BUT SURE METHODS. Empire Chain Linked Up by End of Year. Imperial wireless has had a sat-back so far as the "Beam Ryatem is concerned..
This fact emerges from a letter from the Postmaster-General' to the Empire Prous Union, in which he states that the souding and reception of massages for one site only was agreed to be im- practicable.
By a supplementary agreement, however, sites for communication with Canada and South Africa. have been secured at Bodmin and Bridgwater, and these stations aro to be completed by October. Sites have also been selected for the stations for communication with India and Australia.
The high-power station at Rugby, according to the F.M.G.'s leter, will be completed about November.
Moreover, the Dominions and Incia have boon invited to nomicate ropresentatives for a Permanent Committee under the chairmanship of the Assistant Postmater-General to advise on the practical details of the work- ing of the Imporial wirelus por vices.
HOW WAVES ARE CAUGHT... Wireless Energy That Is Wasted,
Ether is the medium which enables a wireless transmitting station to be heard at a wireless receiving station.
Although wireless, waves can panetrato solid things such as buildings, light waves, which are also convoyed by the other, can-. not do so. This is because light wavas differ greatly in length. from ether wavos.
Standing on the beach you can Isee a series of Foa-wave croste. The vase-length is the distance between one crost and another. Now in wireless the waves longtha compared to light wave lengths are quito large, Light wavea are extremely short.
For example, 2LO broadcasts on a wave length of 365 motres, and by that is meant that tho distanco from the top or orest of ono wave to the orost of the next wave is 365 metros. A light wave, however would be but on
So it is when you put up an aerial in your garden to receive broadcast concerts. The other waves, are every whoro, and a minuto fraction of the electro- magnetic energy transmitted by
broadcasting station is picked up by your aarin), but this frac- tion is so small that it does not mean that the energy transmitted will be all used up because thousands of other, aerials aro tapping the other waves.
10 BY ACA SERVICE INC
"Tho first broadcastor was the first woman who kissed and told
UNITED THROUGH RADIO.
Twenty-one years ago Mary McIlvain left her widowed father, James W. Mellvain, to live with a grandmother, That was the last she hoard of him despite many years searching. The other day as a last resort she broadcast her story from Philadelphia. An uncle in Upland, Pa.; heard her, notified her father, and the happy reunion is shown above,
LOTOL
KILLS
NOXIOUS INSECTS and DISEASE GERMS.
FLIES BRING TYPHOID, and
&
DYSENTERY.
MOSQUITOES convey] MALARIA
COCKROAHES
causo
CANCER
GO THROUGH THE HOUSE
SPRAY
THOROUGHLY.
LOTOL
FREELY.
OF ALL CHEMISTS & STORES.
SOLE AGENTS:
A. S. WATSON & CO., LIMITED.
HONGKONG HARDWARE CO.
- TAI LEE CHAN,
ESTD, 1884 ---
METAL GOODS and HARDWARE.
Tel No. 1993,
119 Jorvolk Street
C. P. Goerz
Lenses, Cameras & Binoculars.
DEVELOPING and PRINTING
Telehpone C. 3217
HALL, LAW & CO., LTD. 30 32, Des Voeux Road.
JAVA
THE WONDERLAND
Java, the "Pearl of the East" is a singularly attractive spot for the ideal holiday. There is some- thing for every taste--and a splendid climate.
Up-to-date Hotels Luxurious Railways Beautiful Scenery Sport of all Kinds
WHY NOT SPEND YOUR HOLIDAY IN JAVA ?
Regular scrvice between Hongkong and Batavia maintained by the J. C. J. L, steamers. Limited accommodatica for Saloon Passengers. Doctor carried. All steamers filled with wireless. For fares and full particulars about Java apply-
JAVA-CHINA-JAPAN LIJN
GO
YORK BUILDINGS
TO JAVA