• Publications
  • Influence
A New Type of Secondary Radiation
IF we assume that the X-ray scattering of the ‘unmodified’ type observed by Prof. Compton corresponds to the normal or average state of the atoms and molecules, while the ‘modified’ scattering ofExpand
  • 1,588
  • 33
A Theory of the Viscosity of Liquids
As is well known, the viscosity of gases and its variation with temperature has received a satisfactory explanation on the basis of molecular theory. Little progress has, however, been made towardsExpand
  • 109
  • 2
  • PDF
The Negative Absorption of Radiation
IN Einstein's celebrated derivation of the Planck radiation formula, an equilibrium is considered to exist between three elementary processes: (1) a spontaneous emission from the atoms, (2) anExpand
  • 21
  • 1
Experimental Proof of the Spin of the Photon.
IN a paper under this title which has recently appeared,1 we have described and discussed observations which have led us to the conclusion that the light quantum possesses an intrinsic spin equal toExpand
  • 12
  • 1
  • PDF
The Optical Analogue of the Compton Effect
THE presence in the light scattered by fluids, of wave-lengths different from those present in the incident light, is shown very clearly by the accompanying photographs (Fig. 1). In the illustrationExpand
  • 66
Polarisation of Scattered Light-quanta
IT is well known from the work of Barkla, Compton, and others that X-rays scattered through 90° by matter are completely polarised, irrespective of whether the electron remains bound or suffersExpand
  • 28
The Colour of the Sea
THE view has been expressed that “the much-admired dark blue of the deep sea has nothing to do with the colour of water, but is simply the blue of the sky seen by reflection” (Rayleigh's “ScientificExpand
  • 14
Conical Refraction in Biaxial Crystals
AN arrangement for demonstrating conical refraction usually found in laboratories is a piece of aragonite crystal mounted inside a little tube which has one end covered with a metal foil pierced by aExpand
  • 8
Musical Drums with Harmonic Overtones
IT is well known that percussion instruments as a class give inharmonic overtones, and are thus musically defective. We find on investigation that a special type of musical drum which has long beenExpand
  • 19
The Structure of Molecules in relation to their Optical Anisotropy
As is well known, the light scattered transversely when traversing a column of gas or vapour is not completely polarised, the defect of polarisation depending on the nature of the substance. . TheExpand
  • 2