Generalizing the Heisenberg uncertainty relation

The proof of the Heisenberg uncertainty relation is modified to produce two improvements: (a) the resulting inequality is stronger because it includes the covariance between the two observables, and (b) the proof lifts certain restrictions on the state to which the relation is applied, increasing its generality. The restrictions necessary for the standard inequality to apply are not widely known, and they are discussed in detail. The classical analog of the Heisenberg relation is also derived, and the two are compared. Finally, the modified relation is used to address the apparent paradox that eigenfunctions of the z component of angular momentum L_z do not satisfy the \phi-L_z Heisenberg relation; the resolution is that the restrictions mentioned above make the usual inequality inapplicable to these states. The modified relation does apply, however, and it is shown to be consistent with explicit calculations.Comment: 12 pages, no figures. Contains corrections to errors in the published editio

A Letter from Eric Robertson to John Wren-Lewis

This letter refers to questions John Wren-Lewis had asked Eric Robertson

Recordings of Ple-Temiar Dream Music

A piece written about the events of the night of recording the Dream Music as well as some background information about how the whole night came together. It goes on to explain the importance of the recordings and the impact of war and H.D. Noone going missing, and the ability to record the Temiar again

Draft Notes and Responses

These are the draft notes and final responses written by Eric Robertson in answer to the queries and statements posed by John Wren- Lewis to Tony Beamish, Eric Robertson and Peggy Robertson

Instruction to Copy Discs

This letter to a Mr Glover at the British Ministry of Information contains information as to what should be done to the recordings made in the December of 1941 of the Ple-Temiar community

Eric Robertson’s CV

The CV of Eric Robertson from the beginning of his education in 1921 to the appointment of his most current position for the BBC, at the time of writing his CV, on April 15th 1945

Instructions for Processing Recordings of Temiar Dream Music

A short note on how the Temiar Dream Music should be re-recorded onto a more sturdier form of disc

Social medicine and international expert networks in Latin America, 1930–1945

This paper examines the international networks that influenced ideas and policy in social medicine in the 1930s and 1940s in Latin America, focusing on institutional networks organised by the League of Nations Health Organization, the International Labour Organization, and the Pan-American Sanitary Bureau. After examining the architecture of these networks, this paper traces their influence on social and health policy in two policy domains: social security and nutrition. Closer scrutiny of a series of international conferences and local media accounts of them reveals that international networks were not just ‘conveyor belts’ for policy ideas from the industrialised countries of the US and Europe into Latin America; rather, there was often contentious debate over the relevance and appropriateness of health and social policy models in the Latin American context. Recognition of difference between Latin America and the global economic core regions was a key impetus for seeking ‘national solutions to national problems’ in countries like Argentina and Chile, even as integration into these networks provided progressive doctors, scientists, and other intellectuals important international support for local political reforms