A Mechanical Method for the Analyisis of Complex Spectra

This paper discusses the application of the punched card equipment, now commonly used in statistical and actuarial work, to the analysis of complex spectra into terms. The spectral frequencies are punched on one set of cards and as complements on another. These cards are then passed in pairs through the tabulator which is provided with a summary punch. The cards from the summary punch are sorted and tabulated. The common differences as well as a code number indicating the lines giving rise to these common differences may be easily read from the tabulation sheet. With the aid of certain refinements, the method becomes very rapid and requires only routine attention on the part of the operator

On the Dynamics of a Spherically Symmetric Molecule

An attempt is made to postulate a molecular type which bears some relationship to the known facts of monoatomic molecular structure, yet which is simple enough to allow its kinetic theory to be worked out. The molecule chosen consists of a positive nucleus, surrounded by a negatively charged spherical shell. Developments of the distance-force relationship, and of an equation of state are given

Tensors and the Calculation of Vibrational Frequencies of Crystal Plates

A tensor method has been developed for the calculation of the frequencies of vibration of an infinite plate of any crystalline substance cut at any orientation. By the use of this theory a set of curves have been calculated showing the three characteristic frequencies for plates of quartz cut at various orientations. These results are in good agreement with the experimental work of the authors and other observers

ELSA in industrial robotics

Purpose of ReviewIndustry is changing; converging technologies allow a fourth Industrial Revolution, where it is envisaged that robots will work alongside humans. We investigate how the research community is responding to the ethical, legal, and social aspects of industrial robots, with a primary focus on manufacturing industry.Recent FindingsThe literature shows considerable interest in the impact of robotics and automation on industry. This interest spans many disciplines, which is to be expected given that the ELS impacts of industrial robotics may be profound in their depth and far-reaching in their scope.SummaryWe suggest that the increasing importance of human-robot interaction (HRI) reduces the differentiation between industrial robotics and other robotic domains and that the main challenges to successful adoption for the benefit of human life are above all political and economic. Emerging standards and legal frameworks may scaffold this success, but it is apparent that getting it wrong might have repercussions that last for generations