H J Taylor
Articles written in Proceedings – Section A
Volume 3 Issue 1 January 1936 pp 265-271
The tracks of the α-particles from members of the thorium series have been recorded in a photographic emulsion, by the use of a technique previously developed. Radiothorium atoms introduced into the emulsion disintegrate
Volume 3 Issue 3 March 1936 pp 265-271
The tracks of the
Volume 19 Issue 3 March 1944 pp 149-157
Apparatus is described by means of which sessile drops can be formed on the upper end of a vertical tube. The drops can be renewed as frequently as desired. Photographs of the drops are measured and from the dimensions the surface tension is calculated with the help of a new reduction table given in the paper. The method in this form is considered to be as reliable as any of the other standard methods. It has been applied to measure the surface tension of pure water against saturated air. The value at 20°C. is found to be 72·70±0·07 dyn./cm., in good agreement with other determinations.
Volume 31 Issue 2 February 1950 pp 130-139
Photographic plates exposed at high altitudes show a population of stars and isolated single tracks. Statistics are given covering 288 stars and 655 isolated tracks found in an area of 17 sq. cm. Some tracks are closely associated with the stars, and these have a mean range of 4·1 cm. air. The remainder, which show no association with stars, have a mean range of 3·4cm. air. Some stars have more than one associated single track. Alternative explanations are discussed. The most probable hypothesis appears to be that the single tracks are due to the spontaneous disintegration of unstable neutral particles emitted from the stars.
Volume 36 Issue 1 July 1952 pp 41-54
The paper describes high-altitude balloon experiments with nuclear plates, made near the geomagnetic equator. A magnetic orientating unit was used. The behaviour of balloons is discussed, and it is shown that systems of balloons may have a series of stable floating levels at determinate altitudes. Analysis of the tracks observed in the plates has given the following values for the primary cosmic ray flux at the geomagnetic equator: For 6⩽Z⩽10, N0=1·45±0·30 particles/m.2 sec. sterad. For Z>10, N0=0·33±0·08 particles/m.2 sec. sterad. Any observable E.W. asymmetry at the heights reached by the plates is within the statistical uncertainty of the results. The charge spectrum is in general similar to what has been previously observed.