![]() 'I'hese plates are on opposite sides of the undeflected path of the ray on axes which are at right angles to each other, and voltages responsive to the phenomenon to be investigated may be impressed upon these plates, causing the ray to be deflected in a direction and by an amount which is proportional to the direction and magnitude of the applied voltages in the two axes.the tube shown is provided with a pair of deflecting plates I6 for deflecting the ray along a horizontal axis and a pair of deilecting plates I1 for deflecting the ray along a vertical axis. ![]() Ordinarily, the beam will strike the surface at its center I5. the cathode ray beam passes down the length of the tube and is projected upon a tracing surface I4 which is here represented as the end surface of the enlarged portion of the glass tube which surface is provided with a fluorescent screen to make the beam easily visible thereon.the cathode and focusing means comonly called cathode ray gun, are not represented in detail but it will be understood that a suitable cathode ray gun is placed at the left central end of the tube and cathode rays are shot toward the tracing surface I4. ![]() cathode and focusing means for emitting a cathode ray or beam represented at II. Ihe tube consists of a sealed glass envelope I0 having in one end a.I have here illustrated a usual form of cathode ray tube without its circuit connections and with the addition of my invention thereto.This deection of the ray is in addition to any deflection of the ray produced by the usual deecting means and without interference therewith. I employ a magnetic eld which is adjustable in its direction and strength for deflecting the cathode ray as desired before it strikes the tracing surface.the beam or ray strikes the tracing surface at its center, thus establishing a permanent zero position of the ray on such surface.curves are obtained which are representative of some phenomenon to which the deecting voltages are responsive. ![]()
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