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THE WORLD OF RADIO.
A Revolution in Valves.
?
SATURDAY, NOVEMBER 3, 1923.
Kinks O'
The Links
QuestionPlayer drives from
As most enthusiasts know only sists of 36 cms of tungsten wire the toe. The course takan by his too, well, the cost of valves, both 005 com. in diameter. The for sending and receiving, is very į hosting currant is of 35 amperes, : heavy, even in an amateur set. The
valve of this sort
We e
ball makes it seem that he has proper tension of the reaching his ball be discovers gone out of bounda Upon filament is assured by the in that it is lying just within bounds. qulated rods, pressed down by the The position of the ball, however, spring.
very similar
11:30 A
has
This expense is proportionately greater with the increase of the size of the valve and the power of the station, and as large valves, The grid is carried by a split; is such that the player in orda subjected as they are to very high ring, which is bald by its own to properly play same must as temperatures, very quickly wear pressure in the glass tube, which is sume a stance that is out of out, large broadcasting stations joined to the plate in the manner bounds. Is this permissible? find their hill for valves very | already described. The grid is a Answer-If a player's ball is} spiral, 13 em. in diameter. The perfect right to stand out of within bounds, the player has a great.
It was consideration of the plate is 11 cms, long, and has a impracticability of the ordinary diameter of £5 cms. The racun he believes by so doing he will bounds in assuming his stance, if glass valve (says the Paris cornecessary for the proper function be able to get away a better shot. respondent of Popular Wireless ing of the valve is obtained by Weekly) which drove M. Holweck, 'means of a special helicoidal
Question Has a player the a Parisien scientist working at ; molecular pump..
right at any time during the| the Radium Institute, to invent a This pump, also invented by playing of a hole tagscertain the valve which could be taken to M. Holweck, can empty the valve number of strokes his opponent pieces and repaired. His new in 30 seconds. During the whole has played? Is there any pen valve has been so successful that time the valve is being used the alty if so opponent gives the two have been in continuous use pump is working. It may be said wrong information as to the Jat the Eiffel Tower station since, to work on the same principle as number of strokes he
May 23rd, 1923
the moving causeway with which played? The difficulties to be overcome we are familiar at exhibitions. Answer A player is entitled in constructing a three-electrode I am tempted to
at any time during the playing. analogy
of a hole to ask his opponent Captain to complex. The filament touches Eckersley's when he spoke of how many strokes he has played. temperatures "of 2,700 degrees the electrons as little guys Very often such knowledge has absolate, and it had to be borna thirsting for a drink.” Well, im- A considerable influence on in mind that the coefficients of agine a large crowd of blind (no, the play. If a player gives the glass and the various metals not what you mean) men rushing wrong information as to the used was different, otherwise in and out of a room which has number of strokes he has played, serious difficulties would be en only one door. The room is the he shall lose the hole unless he countered in keeping the interior valve and the blind men are the corrects the mistake before his op of the valve in vacuum.
molecules. Now suppose that ponent has played another stroke. The principle upon which the you fit a moving path leading Question---Is there Any Holweck valve has been con- from the room and out of its only difference with the order of play structed has been to use the plate door. The effect will be to hury on the putting reen than through of the valve as its foundation those blind men who are burrying the fairway? If a player putts. that is, the red copper plate which 'out still quicker, and if your out of order on the green how surrounds the grid and the fila-, moving path goes fast enough can the mistake be rectified. ment forms the cylindrical ex- the progress of the blind men AnswerWhen both balls terior of the valve. This plate is who are hurrying in will not are on the putting green, the cooled by a water jacket, and is merely be retarded, but they will same custom that prevails in fitted at the top with a glass tube never seach the room, and those the rest of the game is followed, upon which rests a metallic cap wandering inside will be expelled the one farther from the hole is from which the grid and the fila-¡ little by little.
played first. If a player nearer ment are suspenied.
M. Holweck's pump is on the the hole should err and play first, The joints of the valve at the same principle. The end of the his opponent has the right to junction of this glass tube and valve is connected to a spiral recall the stroke, make him the plate, and at all other joints, corridor, the floor of which is replace the ball and wait until are of rubber rings made of in continus motion. All the his proper tora. specially prepared rubber-rubber molecules which enter this corri from which all volatile matter dor and land on moving parts and excess sulphur has been are hurled away very violently. carefully removed. These joints (rebound from the sides to the are, moreover, arranged like stuf-moving floor, and are again hur ing boxes, so that only the very led further away. So eficient) It is not always that the "elep- smallest area of the rubber joints is this pump that it will cause bant has the best of the argu
come in contact with the the pressure in the valve to fallment A Calcutta paper has an
30 extremely rarefied gases in the in
to 1-1000th interesting and singular story interior of the valve.
of a milimetre of mercury; All illustrating the perversity or the Toe filament is carried by two air and any gases released by the intelligence of elephants. nickel rods, and the negative heated metals disappear, and the certain zemindar lent current is carried to one electrode, valve works perfectly once the elephant to a friend who wanted it by the insulated electrode.preliminary vacuum is etablished, for the purpose of adding "dignity The other electrode, is joined as all listeners to the Eiffel Tower to a wedding procession to the metal cap, to which radio concerts for the last two order to reach its destination the can be soldered the connection to months can testify.
elephant bad to cross the Ganges. the positive pole of the &C- With a tension of 5,000 volts at As a rule these animals do not cumulators. The filament con- the plate, the power of the aerial need much persuasion to enter is 8 kilowatts (35 amperes). With the water but the beast in ques- 4,000 volts the power is still 58 tion absolutely refused to quit kilowatts (30 amperes), which is the bank of the river. However, in the ratio of 8 to 10. Actually as it was very tame, hundreds the valve is used so as to give of coolies were collected and by serial power of 5 to 6 tying ropes round its neck and kilowatts.
legs they succeeded in palling the This new valve is not costly; it animal bodily into the river." As is easily repaired and light, and soon as it got into deep water will no doubt be adapted for use it turned over on its back, and in on ships, drigibles, aeroplanes, this ignominous pisition with And everywhere where shock end only its four feet and the tip of its vibration is likely to cause the truck showing, was towes across breakse of the filament, thejby a couple of boats, Arrived melting of the plate, or injury to safely on the other side the beast the grid. It is evident that every got on its legs again. Then, after part of this new valve can easily all the ropes had been taken off be repaired or replaced.
can
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RECENT INVENTIONS.
Amongst recent inventions are the following:-
M. Latour.-Inductances.
THE ELEPHANT WON.
Sagacious Beast's Ruse.
A
his
In
and the mahout was triumphant
ly waiting to mount, the beast! back to the other side, when it walked into the river and swam quietly made its way home again. Iron-cored reactance coils having by saying it believed it had been The mahout explains its action H.F. currents superposed upon a sold and was determined not to direct magnetising current for use
RADIO
COMPLETE SETS OR PARTS
ALL MATERIALS IN STOCK INCLUDING HEAD SETS „
*A* * “B” BATTERIES.
COMPLETE SET OF PARTS TO MAKE UP A TEREK VALVE SET, ALL IN ONE CABINET NEAT-COMPACT – RELIABLE
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Your Children's Clothes
LUX
will make light work of keeping the children nicely dressed. Linens. lawns, organdies and batistes can
be made to last just as long as the" dark, ugly ginghams
It is so ebay to wash the children clothes in LUX. The thin, while, silky Lux Sakes, specially made by our own exclusive process readily dissolve into a rich bubbling lather a harmless to fine fabrics as pare water itself Jost squeeze the 'creamy wads through and through the little garments rinse, squeeze out surplus water, and base to day. Do not wring or sub. Lite stands sopreme for washing fine clothes. It is sold only in sealed pockets-dust-proof! AGENTS:-
The China Soap Co., Ltd. Shanghai-Hongkong-Tientsin Hsaro-Tsinanfu-Xou k dwa
leave a home where it was trest- THE HUMAN ZOO
in modulators or static frequenced as a pet. changers are arranged as two groups in series, and have reactance-capacity shunt to pre-j
vent by-passing, the D.C. supply ture of 58 per cent. parafin wax. and signalling key being inserted 13 per cent resin, and 4 per cent. between the reactance and the ivory black is suitable for pouring two groups.
into the mould.
re-
F.J. Round-Telegraphy-For C. F. Elwell, Ltd. & B. EG. eliminating atmospherics from Mittell-Receivers.-Valve graphically recorded signals alceiving sets are fitted with plug-in directional serial is coupled to jacks so that as the telephone is two series of oscillatory circuits admitted the plate circuit is in cascade, оде of which broken and the filament circuit is tuned to the signals and completed. Further, the insertion the other 90 கக to give a of the ping to one valve of a panel resonance curve not quite over-lights up all the valves between lapping that of the first. The it and the serial.
resulting currents are rectified C. V. Morris.-Valves.-One or and opposed, and operate a more resistance coils are arranged recorder. Marks are produced around a valve socket within or either side of the zero line, without a casing and a contact is, bot for certain phase values provided so that the resistance is of signals and atmospherics, their in series with the filament and amplitude is zero, and therefore a may be varied, by rotation of the second aerial spaced a good part contact around the socket. of a wave-length from the first Patent Electric Co. Inc.- and with similar connections i Inductances.-Inductance coils employed. The errors are seldom are mounted upon holders per- identical, and the two currents mitting them to be adjustable in may be combined to produce a two places, as, for example, ■ record of every signal..
horizontal shaft journalled in a H.L. Thomas, Inductances --leeve upon a vertical post. Multi-layer coils and their plug Bevel gear may affect the adjust connections are embedded in inment, and a fixed inductance sulating material in a mould, the may be used in conjunction with whole forming a solid block im-one or more soils so, mounted, pervious to moisture, etc. A mix- to give a wide range of variation.
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