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Tasaburô YAMAGUTI
1932 Volume 14 Pages
1-6
Published: 1932
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The reflccting spectra of monochmrnatie euthode rays of high volts energy from the cleavage faces of some crystals were obtained by means of the rotating crystal method. From the deviation from Bragg's law the refractive indices of the crystals for the cathode rays of different wave-lengths were determined. The inner potentials were found to be 7.1, 9.1, 11.9 and 13.4 volts for rocksalt, gypsum, stibnite and calcite respectively
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Takuzô SAKAL
1932 Volume 14 Pages
7-13
Published: 1932
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A wave function which A. Sommerfeld used in his recent paper, , uber die Beugung and Bremsung der Elektronen'' is applied to the photo-electric problem. Certain definite integrals which came into the problem an be easily evaluated without any assumption about the magnitude of the wave length of the incident light. The results agree with thore obtained by J. Fischer
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Shigeo MOCHIZUKI
1932 Volume 14 Pages
14-21
Published: 1932
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The charaeterises of the spark discharge are studied with special reference to the action of the residual charge distributed along the traces of the brash discharge, for the cases :- (1) With a portion of a resonant wave. (2) With an uni-directional pulsating wave. The inference from the test results can be summarized as follows:- (1) The spark-over distance increases gradually as the frequency increases from 50 cycles to about 3 x 10_??_ cycles, beyond which it decreases rapidly and approaches the value fur the case of a single impulse with its tail chopped off by means of a sphere gap of the same length. (2) The positive Lichtenberg figure produced by an uni-directional pulsating potential with two voltage peaks shows that the discharge spreads radially to the extent correspondhing to the first voltage peak; but the subbequent discharge due to the next voltage peak takes place, spreading along the traces of the previous shoot for some distance, and then proceeding just between the streaks of the former discharge. (3) In the case of an uni-directional pulsating wave, the positive sparkover distance is always longer than that for a single impulse; for the negative discharge, however, it is reversed. The above results are discussed form the consideration of the phenomena such as the mobility of ions, their diffusion and the variation of potential gradient by the space charge. The characteristics of the spark discharge have been investigated, particular attention being paid to the relations between the form of the Lichtenberg figure and the wave shape of the applied voltage
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Yoshikutsu WATANABE
1932 Volume 14 Pages
22-35
Published: 1932
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Tatsujirô SHIMIZU
1932 Volume 14 Pages
36-40
Published: 1932
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Hidogorô NAKANO
1932 Volume 14 Pages
41-43
Published: 1932
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Masito NAKANO
1932 Volume 14 Pages
44-56
Published: 1932
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Concerning the period of the aeeomdary undnlations in a bay full investigations have already been exeented but it remains still to be investigated as regards the amplitudes. espeeially the rate of variation or the rate of accumulation or dissipation of energy. In a bay with a large area in eomparison with a narrow mouth, viz in a bag-shaped bay, the rate of accnmulation or dissipation of energy of the secondary undulations may be expeeted to be small compared with the comtrary case viz in a funnel-shaped bay. In this paper, is discussed the problem of expressing the rate of variation of energy of the seeondary undulations in a bay as a fanction of its size and form
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Tasaburô YAMAGUTI
1932 Volume 14 Pages
57-62
Published: 1932
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From a detailed investigation of reflecting spectra of cathode rays of 14-01 kilovolts from bent melybdenite, the inner potential, the refractive indiees for cathode rays and the parameter specifying the atomic arrangement in the crystal were determined. The inner potential is found to be 16-5 volts independent of electcon velocity. The internal in which the parameter lies was more accurately determined than that already obtained by the X-ray method. It was found that by the ordinary transmission method N-patterns of molyh-denite can be obtained and he used for the calibration of the wave-length of cathode rays
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Takewo TIKU
1932 Volume 14 Pages
63-88
Published: 1932
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In the course of his experiments with the electret the author, upon with-drawing the electric field from the electret after it lead solidified, found charges Q on the electrode that had been generated by tht electret. The charges were bserved by the rising of the potential of the metal electrode which is placed in contact with the electret in order to produce an electric field, and which upon solidification of the electret mixture, adhered firmly toit. The electret was prepared in the usual way, as has been descrilred already by other investigators. The sign of the charges was the same as that of the electrode when the field was applied. Studies were made of the effects on the charge accumulation of various intensities of the applied electric field and also of various durations of applications. The relations between the rate of the accumulation of charges dQ/dt and time t and temperature T were also studied. The relation dQ/dt=A (T0-T) was found to hold good when the temperature of the electret was decreasing with time, where A and are constants independent of the temperature. T0 is the initial temperature, and T is the cooled temperature. Evidently an important factor influencing the amount dQ/dt is the extent to which the solidification of the electret mixture hasproceeded before the electric field is withdawn. The rate of change accumulation was most pronounced when the field was with Irawn before the mixture had turned very hard. When the electret mixture was in the liquid state, the charges generated on the electrode upon withdrawal of the field
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Tokio TAKÉUCHI
1932 Volume 14 Pages
89-92
Published: 1932
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By using the simplest line-element for a uniform gravitatinnal field the electromagnetic field due to an electron at root in ialilean space is cealuated
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Duizô NUKIYAMA
1932 Volume 14 Pages
93-107
Published: 1932
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The author of this paper studied the e.ne.fs. between two metal pieces in eaintact and in relative motion, but he confined the matter of the paper to the experimental result .All the available metal pieces were tested optimal a steel dise. and found that there are some e.m.fs. characteristic to the metals in test Some of the metal' pneeluced a larger rant when the leresnure at the esontart point war greater than when it was aemaller, but mime metals slowed maximum e.m.f. with certain contact pressure. .Also the relation between the e.m.fs.and the relative velneity of the two metals at the naltaut punt was atnelied sith experimental results showed that with erase metals the e.m.fs.decreased with the relative velocity but there are some metals fur which the e.ln.fs.attained their maximum value at certain relative velocity
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Masayuki MUKAI
1932 Volume 14 Pages
108-111
Published: 1932
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With a limnimeter designed by the author, the reiches of the lake Suwa was observed when it was frozen all over, and it was found that the lake makes two unino-tal and one bino-lal oscillations with periods almost equal to the values when the lake in free of ice. By an apperatas also designed by the author, the vertical motion of the ice plate was recorded simultaneously with the motion of the water, anal they are found to move without any sensible phase difference
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Tatsujiro SHIMIZU
1932 Volume 14 Pages
112-124
Published: 1932
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Sôichi KAKEYA
1932 Volume 14 Pages
125-138
Published: 1932
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Susumu TOMOTIKA
1932 Volume 14 Pages
139-167
Published: 1932
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Along similar liner to Caesura's argument for the ease ad a flat plate in en unHmite:l stream oF a perfect fluid, the flow past an inclined flat plate in a stream between two prrallel wells is investigated and the forces experienced by the plate are calculated. We obtain the remit that the total fluid pressure on the plate is perpendienlar to the fare rd the plate. The result is well eonaistentwith the fundamental property of a perfect fluid that it exerts only normal pressu e on every elementary portion rd the sarface of a body immersed in it bemuse we are dealing with the plate with zero thiekness and consequently the resultant pressure on it must also lie normal to its face
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Atusi KOBAYASI, Daizô NUKIYAMA
1932 Volume 14 Pages
168-178
Published: 1932
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The nutlors of this paper Ntu-lied esperimentary the eocthcients of transmis-Niblity of the ckoudn of the partielen of water, NH, CI and their mixture. They obtained results which do not obey the theory of seatterfnk deduced theoreti-eally by Lord Bayleikh The aonlition that the dimennions of the particles ehould be small connpared with the wave-length is not satisfied in these experiments here reported but it is accepted ganerally that the fogs are more transparent for longer wave-lengths due to the scattering of the water particles. They measured the light energy by means of the blackening of the photo-graphic plates. The law of blackening of the plates were checked with every plate. This paper, however, was confind to report the experimental results with visible rays and those with infra-red were pontponed for the future occasion
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Satoru TAKENAKA
1932 Volume 14 Pages
179-196
Published: 1932
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Snsumu TOMOTIKA
1932 Volume 14 Pages
197-213
Published: 1932
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In the present paper, certain problemsDIRCULE for an annular region bounded by two concentric circles are discuesed, making special reference to hyrlrndynamical applications at she same, time, and we obtain, in each case, the expression in terms of appropriate effiptie functions foranalytie funrtion
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Hisamitu NISI
1932 Volume 14 Pages
214-229
Published: 1932
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The Raman spectra of apatite, beryllonite, phenacite, topaz, beryl, danburite, zircon and tourmaline were examined in detail. On the whole, phosphates give the Raman lines, as is expected from their structures, but the frequency shift of the inactive line of PO
4-group varies from crystal to crystal. In orthosilicates, the frequency shift of the inactive line of SiO
4-group increases with the valency of metal ion and is subject to tolerable fluctuation. In other silicates, the frequency shift of the corresponding line seems to decrease, when the oxygen atom of tetrahedral groups is shared between two silicon atoms. In the case of topaz, it was confirmed that interchanging the directions of observation and illumination does not affect the relative intensities of Raman lines, which are generally influenced by both directions. Topaz, beryl and tourmaline give one or two Raman lines of large frequency shifts. Besides Raman lines, zircon exhibits a characteristic luminescence, consisting of many line-like bands, most of which are localized at blue and green-yellow regions.
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Yosomatsu TAKAMURA
1932 Volume 14 Pages
230-232
Published: 1932
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To find the eritieal of mercury from the curve of the relstion between primary clectron current and the accelerating voltage, measurements were made in a range of about 8 to 30 volts. Although the search forthe eritieal potentinls yiekled negativn resultn, two very clear "hnmps" were obaerved at 13.13 and 18.13 volts respectively
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Ayôton OKA
1932 Volume 14 Pages
233-252
Published: 1932
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Yasuo AKIZUKI
1932 Volume 14 Pages
253-262
Published: 1932
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Susumu TOMOTIKA
1932 Volume 14 Pages
263-291
Published: 1932
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In this paper, the flow around a flat plate placed in a two-dimensionul jet with finite width of an inonmpressible perfect fluid is investigated in a general manner and the forces experienced by the plate are calculated rigorously. along similar line' to Cisorri's argument for the case of a flat plate in an unlimited stream.(1) It is shown that the total fluid pressure tin the plate is perpendicular to its face. The result is quite natural and is well consistent with the fundamental property of a perfect fluid that it exerts in general only normal pressure on every elementary portion of the surface of a body immersed in it, since we are dealing with the plate with a zero thickness
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Yosomatsu TAKAMURA
1932 Volume 14 Pages
292-295
Published: 1932
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To find new sources of the positive thermo-ions various samples were investi-cated. Among them, " barium carbonate and iron " gave a comparatively intense Nand practically constant emission of the positive ions at a constant tem- perature.There was a saturation voltage and a linear increase in the relation between the positive ion current and the applied voltage. The saturation voltage increased with the heating current of filament. and the saturation point became obscure finally.
A formula, i=A
1e
-k1'+Ae
2-k2', was proposed for the decay with time of the positive ion current coming from a metal or a compound
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Tokio TAKEUCHI
1932 Volume 14 Pages
296-298
Published: 1932
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In the first part of the paper, the expression representing the current flowing between two bodies in contact is refined by considering the number of vaeant levels in the bodies. In the seeond part, the resistance at the vacuum eontact of two identical metals, either at the same tempterature or at different temperatures, is obtained, as an appendix to Fienkels work
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Shisanji HOKARI
1932 Volume 14 Pages
299-303
Published: 1932
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Kiyoshi NOSHIRO
1932 Volume 14 Pages
304-309
Published: 1932
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Sôji MATSUMURA
1932 Volume 14 Pages
310
Published: 1932
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Susumu TOMOTIKA
1932 Volume 14 Pages
311-340
Published: 1932
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In this paper, the expressions for the forees acting on a boly placed in a two-imensional jet of an incompressible perfect fluid are obtained by the principle of momentum, under the assumption that the body under consideration has, on its surface, only some angular points with finite angle, if any, but no cusps at all. The obtained expressions for the forces are quite simple and elegant, and the result is applicable to all bodies having no cusps whatever on their surfaces. In the next place, the forces which will be experienced by a cylinder with rectangular cross-section placed in a jet of a perfect fluid are calculated by making use of BLASWS' formula and it is shown that the expressions for the forces thus deduced are, as we should expect, exactly the same as those far the forces acting on any body, obtained in a general manner by employing the principle of momentum
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Jûiehi OBATA, Cotozi SATTA
1932 Volume 14 Pages
341-348
Published: 1932
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The vowdl sounds as sung by voealists in the low-and high-registers, that is, the chest-voice and falseto, were recorded, with all possible eare by means of an electrical arrangement, and the acoustical difference of the two registers studied by analysing the reenrds. The results are experimental evidence for the view that the falsetto is prodeced by reed-like vibrations of f_??_e edges of the vocal chords, whereas the chestvoice is produeed by the opening and elosing of the air passge
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Kiichirû OCHIAI
1932 Volume 14 Pages
349-354
Published: 1932
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Following Dime's new idea of the field (Proe Roy. Soc, 136, 453), the intoaction between two charred particles has been calculated. The magnetic interaction-ε
1ε
2( ν
1x
2) /x
1_c
2 has been derived, but it seems that the Coulomb force comes out with a mistake in sign
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Takuzô SAKAI
1932 Volume 14 Pages
355-362
Published: 1932
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Following the Dirac's new theory, we treat the problem of two particle in three dimensions. It is assumed that the field is deseribed by the vector potential, but the scalar potential is absent. The probability amplitude can he expanded in a form of a power series in 1/c. The Darwin's interaction term e
1e
2/2m
1m
2c
2{(p(1)p(2))/γ+(p(1)γ)(p(2)γ)/γ
3is obtained, but the Coulomb's term is not obtained
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Kôzi SATÔ, Masaaki SASAO
1932 Volume 14 Pages
363-371
Published: 1932
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A train of plane sound waves was made ineident normally upon a parabolic mirror and the sound field was measured by the Rayleigh dise. The shapes of mirrors used in the experiments are of three varieties With five ditferent pitches of sound, the experiments were performed in the sound-proof chamber
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Masito NAKANO
1932 Volume 14 Pages
372-380
Published: 1932
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In a pair of lays lying side by side, there often occur secondary undu- lations showing a feature like that of heats in acousties, and in some occasions intermittent vibrations ale also observed as in the case of two simple pendulums connected by an clastic spring. In this paper, is proposed an explanation for such secondary undulations
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In this paper I intend to generalize the real symmetrical kernel of Hilbert the Hermitian kernel(1) and others
Kôsaku YOSIDA
1932 Volume 14 Pages
381-384
Published: 1932
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Michio ABE
1932 Volume 14 Pages
385-387
Published: 1932
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This problem is not yet solved. It is however possible to cover simply and without gap the inside of certain rectangles with a finite number of squares which are all different from one another. We can give many examples of such rectangles by a simple method, of which however we shall not explain here The present paper gives a proof that among the above-mentioned rectangles there exists such a one whose ratio of the lengths of two sides differs from unity byδ (>0), which is less than any assigned small positive number
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Kiichirô OCHIAI
1932 Volume 14 Pages
388-396
Published: 1932
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An approximate method of integration of Fock's equation applied to the Simple case (1s)
2(2s) is given. Starting with purely hydrogenic wave functions without introducing any adjustable parameter, an expression for the energy is obtained. Numerical calculation shows that the energy values thus obtained agree with experimental ones tolerably well
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Tokio TAKEUCHI
1932 Volume 14 Pages
397-398
Published: 1932
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In the first part of the paper, a maximum value of k which is the coefficient of Doppler-effect or the rate of annihilation of matter in the universe is estimated When the circumambulation of light round the world is allowed.
In the second part, the part which the Einstein cosrnological constant plays in the kinetic universe is determined
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Revolving AIRSCREWS
1932 Volume 14 Pages
399-417
Published: 1932
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This paper presents the results of investigations that were made on the sounds emitted by two actual airscrews; the one living of wood and the other of metal. The sounds were recorded as faithfully as possible by means of an electrical arrangement, consisting of a condenser microphone, a powerful amplifier and an oscillograph. The analyses were made on the records. The sounds of a rotating airscrew consist of two components-the low and the high frequency sounds. The former is mainly produced by the pressure difference in the two sides of the blade, and has the fundamental note with a pitch corresponding to the product of the number of rotations and the number of blades. Over-tones are of course present, and they differ in different airscrews. Flexural vibrations of the blades and shaft also contribute in producing the low frequency component. The high frequency component arises from the vortices shed from the blades and in reality is a group of waves having a high but very indefinite pitch. At slow rotations only the high frequency competent is observable, while at high rotations the low frequency component, especially the fundamental, becomes very audible, and the two components attain the same order of loudness. A 2-A aud-iometer was also empolyed for the purpose of studying the relations between the loudness and the number of rotations and the distance. The loudness increases linearly with the numher of rotations, and diminishes with the distance at a much more rapid rate than that demanded by the inversesquare law
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Tatuo KOBAYASI
1932 Volume 14 Pages
418-429
Published: 1932
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ξ1. It can he shown experimentally that the path of .a long zigzag spark is opened by the help of a volume charge of negative sign induced in the spark- gap by a preliminary phenomenon. The manner producing the negative volume charge may be inferred from the experiment of producing sparks on a surface of a photographic plate. ξ2.From the calculation of the electric field at different points in a spark-gap at the time a spark passes, we come to a conclusion that a spark is produced when root-mean-square-value of the field in a part of the gap 8 5 mm. in length rises up to 28 5 K.V./cm. (This value varies slightly according to the condition of experiment.) ξ3. When a brush discharge occurs, the condition in ξ2 must be fulfilled and the minimum field in the gap is presumably unable to conduct the deve- lopment of the spark-path. This critical value of the field (the field at the centre of the gap) is about 1 8 K.V./cm
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Yotuo TORIYAMA
1932 Volume 14 Pages
430-440
Published: 1932
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The present paper deals with the dust figure in gases and liquid insulators.
In the first part, the figure in air is applied to the studies of the mechanism of the spark discharge. The meehanism of the spark-over can be divided into two stages, in the first of which positive and negative figures develop independently. As the positive figure extends more rapidly than the negative one, the former plays an important role in the first stage. In the second stage, the "second negative streamer" spreads towards the positive electrode along the positive figure, and the complete spark-over will take place, if the “second negative streamer” reaches the positive electrode. In the second part of the paper, the dust figure in liquid insulator is described. The figure is obtained on a plate of insulator immersed in the liquid insulator. There is a relation between the size of the figure and the breakdown voltage of the liquid insulator The variations in the break-down voltage, conductivity of the liquid insulator, and size of the dust figure due to change of temperature and atmospheric pressure are compared. It is concluded that the dust figure in liquid insulator is not due to the jonic phenomena, but to the electr onic phenomena, and the break-down of the liquid insulator is a pure electric phenomon
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Syôten OKA
1932 Volume 14 Pages
441-450
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Taro Morishima
1932 Volume 14 Pages
451-464
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Kin'iti NAKATA
1932 Volume 14 Pages
465-485
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Jûichi OBATA, Sakae MORITA
1932 Volume 14 Pages
486-509
Published: 1932
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The nature of the sounds emitted by a revolving airscrew was studied with the aid of models of one-third and one-quaver the original size. Models of six different airscrews were tested, rotating them by means of a noiseless electric motor. The sounds were recorded by an lectric arrangement consisting of a condenser microphone, amplifier, and an oscillograph, and the tone-colours of the sounds of different airscrews were studied by analyzing the records.
The scale effect, the effect of variation of the geometrical pitch, and the directional property of the sounds were also studied. A notable difference was found in the nature of the sounds emitted by the Reed metal airscrew, made of twisted thin duralumin plate, and the airscrew of the usual thick form. In the former, the fundamental tone, having a frequency corresponding to the product of the number of blades and the number of rotations per second, is prominent only in the plane of rotation, while in the other positions the acoustic spectrum is rather continuous, even at the highest revolutions. On the other hand, in the airscrew of the usual thick form, the fundamental tone comes out strong at high revolutions, both in the plane of rotation as well as in a position 45° to it.The directional property thus differs with different airscrews, while in the matter of scale effect the smaller size seems to be somewhat advantageous. Finally, the general effect of the airscrew sound on our sensation is studied. At slow rotations, the component having a high but indefinite frequency predominates, and the sound being rather noiselike, while the low frequency component, especially the fundamental tone, becomes louder on increasing the number of rotations. At the highest rotation both components attain the same degree of loudness
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Masaaki SASAO
1932 Volume 14 Pages
510-521
Published: 1932
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A train of plane sound-waves was made to fall normally upon a circular plate and reflectcd, the distribution of intensity on the normal axis was ealcu- lated raider a few assumptions, and comp tied it with accurate experiments. The experiments were performed in a sound-proof chamber, with two different plates and four diffarent pitches of sound. Near the plate we found interesting pheno- mena, namely that the envelope of standing waves, if the wavelength is smaller than the radius of the plate, has a maximum and a minimum, and that the interval between the maxima of standing waves is creator than half a wavelength. These facts were confirmed by theory
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Tokio TAKÉUCHI
1932 Volume 14 Pages
522-523
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Takuzô SAKAI
1932 Volume 14 Pages
524-526
Published: 1932
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Syôten Oka
1932 Volume 14 Pages
527-528
Published: 1932
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Satoru TAKENAKA
1932 Volume 14 Pages
529-542
Published: 1932
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