International projectionist (Oct 1931-Sept 1933)

26 INTERNATIONAL PROJECTIONIST November 1931 measurement shows us that the area is four times as great. If the diameter is tripled, the area becomes nine times as great. In other words the areas of circles do not vary as their diameters, but rather as the squares of their diameters. (Fig. 5.) We have noted that the areas are proportional to the squares of their diameters. Similarly, they are proportional to the squares of their radii, r' indicates the product of r X r, which represents the radius multiplied by the radius. In order to express a proportion in the form of an equation, we introduce a "constant" called pi (tt), a Greek letter, and assign to it a value of 3.1416, because the areas increase by this constant value as the radii increase. Hence we have the formula: Area of a circle = ^ X r" or: A = 3.1416 X r', square inches. Answer. Solid Geometry Solid geometry is simply a further application of plane geometry. Instead of dealing with plane objects like a square and a circle, solid geometry deals with objects having three dimensions like the cube and the sphere. By three dimensions, we have reference to length, width, and depth. Professor Albert Einstein, the celebrated physicist, has added a fourth dimension which he calls "time' ; but this principle need not be discussed herein. The Cube The cube really is a pile of squares. The area of a square is obtained by multiplying its length by its width. To determine the volume of a cube, the dimensions of which are 1 inch long, 1 inch wide and 1 inch deep, we multiply the length by the width, which gives us 1 square inch. We then multiply this area by the depth to get the volume. As a result, the volume of this cube is 1 X 1 X 1, which is 1 cubic inch. Formula: V = 1 X w X h where: v = volume 1 = length T/f = width h = height or depth The volume of a cylinder is obtained in the same way. The area of the base is ■^t\ We then multiply this area by the height to determine the number of circles in this cylinder in cubic inches, by using the following formula: V = TTl'^h where: v = volume of cylinder TT = 3.1416 r = radius of the base h = height of cylinder [To be Continued) ALLIANCE ITEMS I. A. Executive Board Meets at Vancouver THE regular meeting of the General Executive Board of the LA. was held in Vancouver, B.C., on October 12. Several sessions were held during the course of the American Federation of Labor Convention which had assembled in Vancouver for the customary two-week period. The initial roll call revealed all members of the General Executive Board present, as follows: William F. Canavan, International President; William C. Elliott, William Covert, John P. Nick, William J. Harrer, Joseph C. Campbell, William T. Madigan, Floyd M. Billingsley, and Fred J. Dempsey, General Secretary-Treasurer. Due to the resignation of former Third Vice-President Cleve Beck, and the appointment of Floyd M. Billengsley as Seventh Vice-President, each member of the Board, from the office of Third VicePresident on, was automatically advanced, this being the first meeting at which a proper recording of this change was made. The meeting of the Board was officially adjourned on October 14th. Charter Installation at Johnson City, Tenn. FORMERLY under the jurisdiction of Bristol, Tenn., Local No. 530, application was made for charter to cover Johnson City, Tenn., and as investigation revealed the applicants had conformed with all International requirements and were qualified in every other respect, recommendation for granting the charter was filed and approved. Proper installation of the new local union was made by Representative William P. Raoul. A pledge of full support was received from the Johnson City Central Labor Union. Tube Warm-XJp Time Included in Schedule CORRESPONDENCE transpiring between the General Office and H. M. Wilcox, Vice-President of Electrical Research Products, Inc., is printed herein for the information and guidance of LA. projectionist members. Compliance with the request contained therein will confer a distinct favor on the interests involved, as, aside from the economical feature it will effect an improved performance: September 30, 1931. Dear Mr. Canavan: We have been co-operating very closely with exhibitors all over the country in an effort to reduce the repair and maintenance costs of sound equipment, and I am glad to state that we have been able to save exhibitors a very substantial amount; in fact, this will run into several thousand dollars this year. In connection with this it has been pretty definitely proven that the life of vacuum tubes can be extended from 15% to 20% if there is a proper heating up time prior to the use of the amplifiers. This heating up does not need to exceed fifteen to twenty minutes. Frequently we have statements mad to us that it is impossible to get the operators to give attention to this matter and it occurred to me that you might desire to prepare a general bulletin on this subject, as I know that you, too, have been co-operating with exhibitors generally with reference to the reduction of operating costs, and this will give you an opportunity of giving concrete evidence in a very practical view of helping them to reduce costs. It is in view of this, that I venutre to pass this suggestion along. Cordially yours, (Signed) H. M. WILCOX, Vice-President. Dear Mr. Wilcox: Answering your letter of September 30th, I assure you that the warming up time is inclusive in all projectionist schedules. My contact with, the matter indicates that the time allotted to this service is thirty minutes. It is only too obvious that a proper performance cannot be given under any other circumstance, and you can count fully upon my official aid in seeing to it that all the projectionist local unions have a provision requring the men to properly prepare the sets for operation prior to the opening of the show. Thanking you for your interest in this matter, I am, with best wishes, Very truly yours, (Sgned) WILLIAM F. CANAVAN, International President. New York and Chicago Locals Victorious WITHIN the space of a few days of the report of the settlement of New York Local No. 306 in their dispute with the Lee 0. Och's interests, word of the favorable termination of the controversy existing between Chicago Local No. 110 and the Independent Exhibitors was received. In each instance, a bitter and resourceful fight was waged by both sides, with the outcome eagerly looked forward to by supporters of Organized Labor and their employers, as it was anticipated the result would have a significant bearing on subsequent issues. The strained relations previously existant between the local organizations and the controlling interests have been healed and a spirit of harmony and goodwill now prevails, with each co-operating for the success of the industry, which, of course, must be assured and has priority over any individual gain and glory sought. On this common understanding, both may be confident of success. Indiana Legislative Body Is Reorganized DISBANDED sometime ago at the discretion of President William F. Canavan, "The Indiana State Legislative Organization" has been reorganized with the permission of the General Office. This new body will function solely as a legislative organization. The formation of this new organization occurred at a meeting held in Fort Wayne, Ind., attended by all Indiana local unions. L. P. McGirr, of South Bend, was elected Secretary-Treasurer. No time was lost in formulating plans to combat the progress of dual organizations in Indiana. Safety will be the