Home Movies (1943)

PAGE 330 HOME MOVIES FOR OCTOBER 8mm. YES, WE HAVE FILM! 16mm. AT LAST! Gorgeous Home Movies by BRUNO of HOLLYWOOD. Starring the World's Most Beautiful Girls. Photographer's Model. 50 ft. 8mm. $3.75; 100 ft. 16mm. $4.75. Movies for grown-ups; also children. Color. B&W, Silent or Sound. Latest Releases, Castle. Official, Hollywood Films, 2x2 Color Slide sample 50c coin. Stamp brings lists. No post cards, please. GLAMOUR NEWSREEL, No. 4, featuring stunning beauties. Majorettes in action and Bathing Queens. 50 ft. 8mm. $1.00; 100 ft. 16mm., $2.50. Sample, complete lists. 10c In coin. Stamp brings all catalogues. "PARTY PHONOGRAPH RECORDS" — New snappy adult entertainment. Stamp brings catalogues. MISCELLANEOUS BAIA precision All-Metal 8mm. Film Slitter... $3.00 BOLEX CINELAC, film preservative, bottle 1.00 BOLEX LENS CLEANER, bottle 35 WELD-ALL FILM CEMENT, safety or nitrate 25c FOTOFADE DYE for making Chemical Fades ... 1.25 FOTOFADE WIPE-OFF TAPE, per roll (ill DuPONT VISCOSE SPONGES, each 35 TITLE DEVELOPR, tubes. Eeach make 16 m... .15 HYPO FIXING BATH, tubes, each make 16 07,. .15 HOME MOVIES, Back Numbers, 11)37-1:138 15 1040-1941-1942-1943 30 1937— May, June, Sept.. Dec. 1938— April. Aug., Sept., Oct. 1940— March, April, Mai™ Aug. Oct. Nov. 1941— April. Nov., Dec. 1942— Ff IK. April. May, June, July, Sept., Oct. 1943— Feb. June. CAMERA SPOOLS WITH CANS— Each Double 8 50c; 16mm. 100 ft. 85c; Unlvrx 15(1 EXTRA CANS Double 8mm. and Slnglo 8 9l7.B....10e SUPER CINEPAN REVERSAL Speed 24-16 Non-Halation Base. Lab. Packed Dbl. 8—33 ft. $1.50; 100 ft. $4.00; 400 ft. $15.00 Sgl. 8—33 ft. $ .90; 100 ft. $2.50; 400 ft. $ 0.50 16mm.; 100 ft. $4.00: 400 ft. $15.00 SUPER CINEPAN PLUS REVERSAL Speed 64-40 Non-Halation Base. Lab. Packed Dbl. 8—33 ft. $1.75; 100 ft. $4.25; 400 ft. $10.00 Sgl. 8—33 ft. $1.15; 100 ft. $2.75; 400 ft. $ 9.00 16mm.; 100 ft. $4.25; 400 ft. $10.00 MOVIE TITLES ARE EASY TO MAKE CINE-KODAK POSITIVE TITLE FILM Laboratory Packed. Pliotoflood Light, Speed fi. Dbl. 8 33 ft. 65c; 100 ft. $1.50; 400 ft. $5.50 Sgl. 8 33 ft. 45c; 100 ft. 1.00; 400 ft. 3.50 16mm 100 ft. 1.25! 400 rt. 5.00 8mm. Clear, Yellow, Special Blue. 16mm. Clear, Amber. Special Blue. These tints available while limited supply lasts. For duration, all will be clear base. Title Instructions Free with Film Orders. Cash, Check or M. O. for quick service. Add 25c for Special Delivery. Overpayments refunded or credited. No stamps, please. Phone Lincoln 1207. W. STUART BUSSEY FILM LAB. 17 E. ST. JOSEPH ST. I N Dl AN APOLIS 4. IND. WORLD'S GREATEST SHOW RENTAL LIBRARY NOW! You can see all of latest WAR and CURRENT EVENTS released by CASTLE and other producers, with our new ECONOMICAL RENTAL PLAN. Write for details. KENWOOD FILMS 818 E. 47th St. Chicago, III. STOP "APOLOGIZING' for your movie titles # To prove how easy it is to make beautiful professional-lookinq titles. . . A-to-Z offers you a • SAMPLE TITLE KIT — FREE • S^nd f-r yur kit tr»d~y — try nor pasv rnethed A-ro-Z MOVIE ACCESSORIES 175 Fifth Ave. Dept. H55 New York, N. Y. Distinctive TITLES and expert EDITING For the Amateur and Professional 16MM. — 8 MM. Black and White Kodachrome Write for our new Illustrated catalog 8TAHL EDITING & TITLING SERVICE 33 West 42nd Street New York. N. Y. '3inisking "Couch " FOR AIL WEU-EDITEO MOVIES CRAIG FOTOFADE MAKES SMOOTH FADES AND WIPES litt.tt.JS Compile K.l, U 75 CRAIO MOVII SUPPLY CO. Ltt Anfht • Inttb • San ttmntltn ^Magnetic Sound (Recording, . . . • Continued from Page } 19 cuit of which includes a steel wire moving at a constant speed. Succeeding portions of the wire become positively or negatively magnetized, depending on the alternations of the electric current in the amplifier output circuit. The recorded sound is reproduced when the electro-magnet is connected to the input side of the amplifier and the wire again moves in the same direction at the same speed, the amplifier converting to sound the energy generated in the electro magnet by the alternating magnetism stored in the wire. An effort to illustrate this fundamental principle has been made in the diagram on page 319. This principle was developed over 40 years ago by the Danish engineer Valdemar Poulsen, who employed it in his Telegraphone which he demonstrated at the Paris Exposition in 1900. Repeated attempts by other experimenters to perfect the invention have failed to overcome all of the practical difficulties. In general the problems involved are as follows: Adequate Amplification: Early experimenters lacked the excellent sound amplifiers now available and so were forced to use relatively large wires in older to store sufficient energy for practical use. This in turn required proportionately high wire speed. Smaller wires and lower speeds are now practical and mzny of the difficulties caused by handling the wire have been eliminated. Depending on the medium chosen, the amplification factor of a suitable sound system for home use should be from 80 to 1 50 decibels. Transverse versus Longitudinal Magnetization: There are two schemes of magnetic recording. The magnetic sound pattern may be arranged either crosswise or lengthwise in the magnetic medium. A lower speed of the medium may be employed with transverse than with longitudinal magnetization, but if the former method is employed the medium must be prevented from turning while in motion. This requirement precludes the use of round wire as a recording medium for transverse magnetization and flat wire or small steel tape is therefore usually employed with this scheme. The problem of reeling and storing the medium is then introduced, because tape is not so readily spooled as round wire. Furthermore, steel tape of suitable dimensions has not been procurable in the past except on special order and at a relatively high cost, and although the lower speed of transverse magnetization is a definite advantage, economic reasons have limited my experiments to longitudinal magnetization. Speed of Wire: Early experimenters, who employed longitudinal magnetization, used wire speeds around 30 feet a second to record 6,000 cycles; but ingenious arrangements and spacing of the magnetizing poles of the recording coils developed by more recent experiments have resulted in acceptable frequency response with wires running 5 feet a second. With transverse magnetization, which is a more recent development, good frequency response can be obtained with 3 feet a second. Regardless of the system of magnetization employed, the wire speed must be uniform. Purity of pitch and freedom from frequency variations, caused by variable speeds, are absolutely essential if music is to be recorded. It is also necessary that the wire run consistently at a uniform speed if synchronization with pictures is to be attempted. The use to which the recorder is to be put is important in the determination of appropriate wire speed. If speech only is to be recorded, an upper recordable frequency limit of 3,000 cycles a second is ample, while for music it is desirable to be able to record 5,000 cycles or higher. As the frequency range is determined by the arrangement of the magnetic poles of the recording coil and the wire speed, these two factors should be weighed together. Frequency Response: High and low frequencies are not recorded equally well magnetically. Lower frequencies take but a fraction of the energy required for recording high frequencies. This is probably due to the time required to turn the molecules in the medium and arrange them in the sound pattern. It is therefore necessary to amplify high frequencies to several times the volume of the lower frequencies. This requires specially designed frequency filters and equalizers. I have not heard this question of time of magnetization discussed by others and well-versed scientists may question my conclusions; but, lacking a better explanation, I have adopted it because it explains the phenomenon of decreasing magnitude with increasing frequency that I have observed. Dynamic Range: The range between fortissimo and pianissimo, known as the dynamic range, is limited in magnetic recorders because distortion is caused by magnetic saturation if the wire is over-energized, and it has been found impossible to eliminate all the back