摘要:

An interferometric method of measuring the angular sizes of discrete sources of radio emission is described. Two series of observations are summarized, the second referring to about 400 discrete sources. More detailed measurements of the angular structure of some of the intense sources are discussed. Most of them have been identified with external galaxies or Quasars visible in astronomical photographs.

ISSN:0010-7514    

DOI:10.1080/00107516508247972

出版商:Taylor & Francis Group    

年代:1965

数据来源: Taylor

摘要:

The radio astronomer requires a specialized combination of aerial and receiver to be able to detect, measure and map extra-terrestrial signals. The following article presents a brief account of the basic techniques employed.

ISSN:0010-7514    

DOI:10.1080/00107516508247973

出版商:Taylor & Francis Group    

年代:1965

数据来源: Taylor

摘要:

The number of known elementary particles is now very large, and to reduce their diverse properties to order it is useful to look for symmetries between them. Symmetry properties of various kinds, and the conservation laws associated with them, are discussed here. After giving a brief survey of the general types of particle encountered in nature, we discuss first the symmetries related to space and time, and associated with the conservation laws of momentum, energy, angular momentum, and parity. Later we discuss the so-called internal symmetries, in which different particles are regarded as different states of a single basic entity. Theories of this type–particularly the ‘eightfold way’–have had considerable success in systematizing the properties of the known particles.

ISSN:0010-7514    

DOI:10.1080/00107516508247974

出版商:Taylor & Francis Group    

年代:1965

数据来源: Taylor

摘要:

In this article we discuss those physical properties (such as diffusion, viscosity and thermal conduction) which are dependent upon thermal motion. Time-dependent distribution functions are introduced, and related to the auto-correlation functions which determine these properties. Measurements on the spectral density of the modes of motion and the propagation of waves in liquids are discussed in detail.

ISSN:0010-7514    

DOI:10.1080/00107516508247975

出版商:Taylor & Francis Group    

年代:1965

数据来源: Taylor

ISSN:0010-7514    

DOI:10.1080/00107516508247976

出版商:Taylor & Francis Group    

年代:1965

数据来源: Taylor

摘要:

Nucleon Structure. Proceedings of the International Conference at Stanford University, 24th-27th June, 1963. Edited by R. HOFSTADTER and L. I. SCHIFF. (Stanford University Press, 1965.) [Pp. x + 421.] £5.

ISSN:0010-7514    

DOI:10.1080/00107516508247977

出版商:Taylor & Francis Group    

年代:1965

数据来源: Taylor