Show Keeping 4 Up Wi 0 Cf n e 9 E Science Service Service Missing Instruments Supplied by Novel Electrical Device Plays Any Scale an and Has Great Volume r Swarthmore Pa When When Dr W W. F. F G. G Swann the well- well known scientist who is director of the Bartol Research foundation foundation foundation tion here lifts his baton in his extra-curricular extra job as conductor conductor conductor con con- ductor of the paid non-paid Swarthmore Swarthmore Swarthmore more Symphony orchestra he can call into service two novel electrical musical instruments used nowhere else in the world Like most paid non-paid musical units the Swarthmore orchestra finds difficulty difficulty difficulty dif dif- dif dif- in obtaining a full complement complement complement comple comple- ment of instruments to render standard symphonic works But ingenuity in the person of the Bartol scientist Dr William Villiam E. E Danforth has devised electrical apparatus apparatus apparatus ap ap- ap- ap that can pinch-hit pinch for the missing French horn and bass clari clari- net A simple elongated box that one holds on the left forearm and plays by moving the fingers on two I metal strips does the trick when linked to radio amplifying apparatus and a loud speaker Slight pressure of the right forefinger forefinger forefinger fore fore- finger on one of the strip causes the loud speaker to give a tone controlled controlled controlled con con- trolled in a fashion similar to the fingering of a violin The loudness loudness loudness loud- loud ness of the tone produced is controlled controlled controlled con con- trolled by moving a small lever with the left thumb The other fingers fingers fingers fin fin- gers of the left hand control the range of pitch of the instrument Dr Danforth explained that while none of the principles used in the instrument are new to electrical science science science ence certain features of design ease of playing and life of the tone produced are improved over what has previously been avail avail- able How Oscillator Works Fundamental to the operation of the explained Dr Danforth Danforth Danforth Dan Dan- forth is a gas discharge oscillator When the finger is placed on the strip an electrical condenser starts charging up like a small water tank being filled through a pipe After a certain amount of electricity electricity electricity elec elec- is stored up in hi this way the electricity is discharged through the gas discharge tube After the discharge the condenser again begins to store electricity and repeats the process at regular inter inter- vals Thus is produced a rapid succession succession succession suc suc- cession of electrical pulses which are sent through a radio tube amplifier amplifier amplifier am am- to a loud speaker |