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This paper presents procedures whereby the symbolization of Thornthwaite's climatic classification may be quickly and accurately determined by use of graphs and nomograms. Potential evapotranspiration adjusted for months and latitude of the station is accomplished graphically. Soil water storage, soil water deficiency, and soil water surplus are determined by the Thornthwaite accounting procedure and, once determined, the symbolization for the complete climatic designation of the station is obtained by further graphical means. [ABSTRACT FROM AUTHOR]

This paper describes the character of neuristor operation composed of a lumped parameter delay line with a negative resistance element parallel to the capacitance, as a function of the precise character of the negative resistance element. This model allows a neuristor pulse transmission in cases with very low characteristic impedance Z= (L/C). The experiments cover a Z value down to 11 . A lower characteristic impedance is possible. The model is analyzed applying Lienard's graphical method and linear approximations. As a result the criteria for characteristic parameters of negative resistance elements to operate as a neuristor are obtained. Based on the results, a neuristor with low inductance, small power, and high-speed operation can be designed. This circuit is convenient for neuristor logic, because, compared with the peculiar pulse width, it has a long delay time per section. The paper also describes neuristor logic without, an R-type junction, using only the threshold property of the neuristor. A conventional Crane's R-junction is also presented. For this neuristor model a destructive collision phenomenon exists independent of the refractory period phenomena. The mechanisms of these phenomena are clarified. [ABSTRACT FROM AUTHOR]

Spreading of an electron beam due to space charge forces under conditions similar to those in the-interaction space of a crossed field microwave device is investigated. The transverse velocity of electrons at the edge of the beam due to the space charge forces is calculated. A graphical method based on the Hamilton--Jacobi equation is described for the modifications of the beam boundary. [ABSTRACT FROM AUTHOR]

The article presents information about solar radiation and stereographic nets. Scholar J. Leighly's graphical method for finding the solar radiation at a given place and date is elegant and more accurate than he claims. Errors of 3 and 4 minutes in time of sunrise which he admits are not in the construction, but in the calculation he used to check results. The author suggests that the important question is whether interest is in the derivation or in results. Any problem about the sun's rays as seen by an observer on earth may be solved in either of two conventions. One may project out to an infinite celestial sphere or in to the earth globe.