Original Paper of J.C Bose
OrOn a Self-Recovering Coherer and the Study of the Cohering Action of Different Metals
JAGADIS CHUNDER BOSE
Proceedings and List of Papers Read April 27, 1899 The Lord Lister, F.R.C.S., D.C.L., President, in the Chair. A List of the Presents received was laid on the table, and thanks ordered for them. The following papers were read: I) “Data for the Problem of Evolution in Man. I. A First Study of the Variability and Correlation of the Hand,” by Miss M. A. Whiteley, B.Sc., and Karl Pearson, F.R.S. “On the luminosity of the rare earths when heated in vacuo by means of cathode rays,” by A. A. Campbell Swinton. Communicated by Lord Kelvin, F.R.S. “On a quartz-thread gravity balance,” by Richard Threlfall and J. A. Pollock. Communicated by Professor J. J. Thomson, F.R.S. “On the electrical conductivity of flames containing salt vapors,” by Harold A. Wilson, B.Sc. Communicated by Professor J. J. Thomson, F.R.S. “On a self-recovering coherer and the study of the cohering action of different metals,” by Professor Jagadis Chunder Bose, M.A., D.Sc. Communicated by Lord Rayleigh, F.R.S. “On the presence of oxygen in the atmospheres of certain fixed stars,” by David Gill, C.B., F.R.S.
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In working with coherers, made of iron or steel, some special difficulties are encountered in the warm and damp climate of Bengal. The surface of the metals soon gets oxidized, and this is attended with variation of sensitiveness of coherer. The sensitiveness, it is true, does not altogether disappear, but it undergoes a considerable diminution. The presence of excessive moisture in the atmosphere introduces another difficulty. Substances to be experimented on become more or less opaque by absorption of water vapor. As fairly dry weather lasts in Bengal only for a few weeks
Reprinted from J. C. Bose, “On a Self-Recovering Coherer and the Study of the Cohering Action of Different Metals,” Proceedings of the Royal Society, London, vol. LXV, no. 416, pp.
JAGADIS CHUNDER BOSE
Proceedings and List of Papers Read April 27, 1899 The Lord Lister, F.R.C.S., D.C.L., President, in the Chair. A List of the Presents received was laid on the table, and thanks ordered for them. The following papers were read: I) “Data for the Problem of Evolution in Man. I. A First Study of the Variability and Correlation of the Hand,” by Miss M. A. Whiteley, B.Sc., and Karl Pearson, F.R.S. “On the luminosity of the rare earths when heated in vacuo by means of cathode rays,” by A. A. Campbell Swinton. Communicated by Lord Kelvin, F.R.S. “On a quartz-thread gravity balance,” by Richard Threlfall and J. A. Pollock. Communicated by Professor J. J. Thomson, F.R.S. “On the electrical conductivity of flames containing salt vapors,” by Harold A. Wilson, B.Sc. Communicated by Professor J. J. Thomson, F.R.S. “On a self-recovering coherer and the study of the cohering action of different metals,” by Professor Jagadis Chunder Bose, M.A., D.Sc. Communicated by Lord Rayleigh, F.R.S. “On the presence of oxygen in the atmospheres of certain fixed stars,” by David Gill, C.B., F.R.S.
II)
III)
IV)
V)
VI)
In working with coherers, made of iron or steel, some special difficulties are encountered in the warm and damp climate of Bengal. The surface of the metals soon gets oxidized, and this is attended with variation of sensitiveness of coherer. The sensitiveness, it is true, does not altogether disappear, but it undergoes a considerable diminution. The presence of excessive moisture in the atmosphere introduces another difficulty. Substances to be experimented on become more or less opaque by absorption of water vapor. As fairly dry weather lasts in Bengal only for a few weeks
Reprinted from J. C. Bose, “On a Self-Recovering Coherer and the Study of the Cohering Action of Different Metals,” Proceedings of the Royal Society, London, vol. LXV, no. 416, pp.