RADIO

Star (Christchurch), Issue 18889, 12 October 1929, Page 17 (Supplement)

RADIO

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The YA Concerts To-night. Of great interest to amateur gardeners will be a talk at 7.40 this evening at IYA by Mr A. E. M’Mahon. He will speak about “Dahlias.” Well varied will be lYA’s concert programme. Songs by Mr Frank Sutherland will be “Mendin’ Roadways,” “Listenin’,” and “Cavalier.” _ There will be monologues by Miss Nina Scott, elocutioniste. The Bohemian Duo and Ingall’s Hawaiians will combine in some light instrumental numbers. Cadman’s “Four American Indian Songs” will be played by the Studio Orchestra. At 2YA this evening a bright vaudeville programme will be given by the Melodie Four, Miss Adele Taylor, Mr Barry Myddleton (entertainer at the piano), and the Berthold and Bent Steel Guitar Duo. The orchestra will contribute numerous selections. Mr L. W. Probert will play as a xylophone solo, with orchestral accompaniment, the “William Tell” overture. At 10 pm. a dance programme will be presented, and at 10.45 the usual “Sporting Summary” of the day’s events will be broadcast. A talk on “The Colon” will be given at 2YA at 7.40 by Mr Walter F. Dudson, dietitian and physical culturist. :: z-i For three hours this evening old-time memories will be revived by 3YA. The entertainment is to consist of old-time songs and recitations and old-time dance music. The dance music will be a very interesting feature of the evening. There will be waltzes, schottisches, lancers, a mazurka, “Fascination” polka, quadrilles, barn dance, D’Alberts, and military two-step. The instrumentalists will be the Willyams Dance Orchestra. On the concert portion of the programme many songs that were once old favourites—and still are —appear. The vocalists will be Mrs D. W. Stallard, Mr L. C. Quane and Mr Bernard Rennell. Popular old-time airs will be played as duets on English concertinas by Theo and Francis Gunther. There will be recitations by Mr Hiram Dunford and Mr Jock Lockhart will introduce much humour. He will revive old-time memories in song and story. 4YA will relay 3YA. Federal Election Results. The Australian Broadcasting Company is making careful arrangements to see that listeners will be given a very complete service on polling night in connection with the present Federal elections. The company will establish a staff in the Tally Room at the G.P.0., Sydney, and the results will be made available on the air as fast as they are received by the returning officer. Not only will the figures for New South Wales be handled, but the inter-State results will be put on the air just as rapidly as those from local centres. Arrangements have been made to keep both stations 2FC and 2BL open until the completion of the count between 1.30 and two o’clock on Sun day morning (3 to 3.30 am., N.Z. time). The company intends to see that the very excellent broadcasting service that has been rendered in the past during election campaigns is fully maintained on this occasion.

WIRELESS FOR BEGINNERS. No. 24. You will remember that, in article 7, “urge” was defined as “pressure” and that the unit of pressure is called the “volt.” Let us return to our simple

glass-tinfoil condenser. The purpose of the tinfoil is to act as a means of distributing any “applied electrical pressure”—get that? What is an “applied electrical pressure” other than a “source of voltage brought into use”? That should be clear. Well, then, let’s continue: The purpose is to distribute any applied electrical pressure uniformly “over the surface of the dielectric” —that is, the glass, in this case. In article 17 we said that “capacity” was the ability (so to speak) of a body to hold a charge—to accommodate a crowd of electrons. As applied to condensers, “capacity” is the property possessed by a condenser to hold a charge of electricity—large or small according to various factors that will appear in due course.

Now we come to another curious point. “Capacity” is not exactly that which a jug possesses to enable it to hold a pint of liquid—not the sort of “capacity” in which we are interested. Bangay explains it very clearly in this wayi He illustrates “capacity” by the analogous mechanical property of “springiness” or “flexibility.” He says: “If a mechanical force is applied to a spiral spring, the spring will be extended to a distance until it exerts a force exactly equal and opposite to the applied force.” Just consider this, for a moment. Take, for instance, a spring such as one finds in common (or that were common in “the bad old days”!) spring-balances or weighing scales. If you fasten one end of the spring to a hook and, taking hold of the other end, pull the spring out, it should be clear that (1) you are using a certain amount of force in extending the spring; (2) the amount of that force used to extend the spring for a given distance will depend upon the

“springiness”—strength of resistance—of the spring; (3) the spring is also “pulHng against you”—exerting its force of resistance,” and it follows that (4) the greater the force you use the greater will be the force of resistance exerted by the spring, until (5) the spring exerts a force exactly equal and opposite to that applied by you. It should also be apparent that a movement or an extension of the spring must take place before it can exert its power of resistance—an opposite force to that applied; also that the distance to which a spring will extend (or expand, if you like that better) when you exert a given force (strength of i the pull you apply) will vary according to the “springiness” of the spring—its flexibility.

Having absorbed all that, you are now ready for this: If an electrical force be applied to a condenser, the dielectric of the condenser “will be strained electrically” until the condenser exerts an electrical pressure exactly equal and opposite to the force applied to it.—Bangay. We haven’t yet finished with our condenser, but what has just been said may take a

bit of digesting, so think it over during the week-end. (To be continued.) Sunday Night in “Aus^e.” Two church services will be put on the air by the A.8.C., Sydney, on Sunday evening—and will be repeated on alternate Sundays thereafter. Station 2BL will relay the service from the Randwick Presbyterian Church (sermon by the Rev W. J. Grant), while 2FC will relay the service from the Newtown Congregational Church (sermon by the Rev Mearns Massey). Three of the artists who will be heard from 2FC during their afterchurch concert to-morrow night will be: Miss Lilian Frost, organist of the Pitt Street Congregational Church; Miss Bessie Cooke, contralto, and Miss Rene Birkett, violinist. Miss Cooke will sing the solo from “Judas Maccaebus”—a former rendition of which from 2FC was the cause of Miss Cooke being congratulated by all the Sydney newspapers on “possessing a charming soprano voice.” “It was the numerous high notes in the solo,” says Miss Cooke, “which gave rise to the delusion.” Although very young, Rene Birkett is reported to be an extremely clever violinist. She will be heard in classical and semi-classical selections from 2FC this evening. WEEK-END PROGRAMMES. TOR SATURDAY. Details of to-day’s programmes by the YA stations appeared in last night’s “ Star.*' 4QG, Brisbane (385HZ.—780X.) 8.30 p.m.: To-day’s race results in detail; general sporting and sailing notes. The night session will be devoted mainly to the broadcasting of the Federal election results as they come to hand. Special arrangements have been made for the securing of the latest figures and these will be announced at regular intervals during the evening. Between the broadcasting of election results the following musical programme will be broadcast from the studio:—Harry Grunden and Mark Solomon, entertainers; Mrs F. North (pianist), “Nocturne in B Flat” (Paderewski), ** The Fountain”; Ben Cloirec (tenor), “My World,” “After Long Absence”; W. H. Davis (cornetist), “Through the Shadowed Vale's,” “ Song Without Words.” The two semi-finals* and the final of the main trophy motorcycle race will be relayed from the Davies Park Speedway. TOR SUNDAY. IYA, Auckland (333M.—900K.) 3 p.m.: Afternoon session. 6.0: Children's session. 6.55: Relay of service from St Andrew’s Church. Preacher, the Rev I. E. Bertram. 8.30 (approx.): Relay from Whangarei of concert by the Whangarei Municipal Band. Close down. 2YA, Wellington (416 M 3 p.m.: Afternoon session. 6.0: Children’s service. 7.0: Relay of service from Taranaki Street Methodist Church. Preacher, Rev T. R. Richards. 8.1& (approx.): Studio concert by the Port Nicholson Silver Band, Band, “ Nearer my God to Thee," “ Les Dragon de Villiers.” 8.27: Soprano, Miss Isabel Cooper, “A Castilian Lament," “That’s All.” 8.34: Baritone, Mr Claude O’Hagan, “ Tommy Lad." 8.38: Cornet solo, Bandsman W. G. Stevenson, “ Shylock.” 8.43: Contralto, Miss Hilda Chudley, “ Steal Away,” “By an* By.**' B.49:'Tenor, Mr Oliver Foote, “The Trumpeter.” 8.53: Band, “ Laughing Marionette.” 8.59: Weather report. 9.1: Soprano, Miss Isabel Cooper, •* Slave Song,” “ I Hear a Thrush at Eve." 9.8: Baritone, Mr Claude O’Hagan, “Roses,” “Youth.” 9.15: Band, “Rossini’s Works.” 9.35: Contralto, Miss Hilda Chudley, “ Homeward to You.” 9.39: Violin with organ, De Groot and Terence Casey, ‘’Cavatina” (Raff), “Parted.” 9.45: Tenor, Mr Oliver Foote, “ Macushla,” “When I Awake.” 9.51:: Band, “0.H.M.5.” 9.55: Close down. 3YA, Christchurch (30630. —980 K.) 3 p.m.: Afternoon session. 5.30:: Children’s song service. 6.15: Hymn chimes. 6.30: Studio programme: Instrumental, Studio Trio, “ Serenade,” “ Berceuse,” “Polonaise in A” (Chopin). 6.43: Grand organ and trumpet, Paul Mania, “ Meditation—Vision de Jeanne D’Arc.” 6.47: Edith Lorand Orchestra, “ Prelude Op 3, No. 1” (Rachmaninoff); “ Liebesfeier ” (Weingartner). 6.55: Grand organ trumpet, Paul Mania, “ Hallelujah Chorus.” 7.0: Relay of service from St