摘要:

The degree of acceptable risk of fracture in engineering components ia discussed in terms of the responsibility which the designer can be celled upon to beer for fractures that occur in service. The common bases of calculation of the dimensions of load-bearing parts are described in terms of the material yield and ultimate strengths, factors of safety and load factors, and the small extent to which these bear upon the incidence of fracture by brittle, fatigue, corrosion and creep cracking is indicated. Experience of these modes of fracture is illustrated in a historical pattern.

ISSN:0010-7514    

DOI:10.1080/00107516708205510

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

Nuclear magnetometers, viz. rubidium and proton magnetometers, are especially suited for accurate measurements of the earth's field from rockets. A description is given of the working principles of these instruments from the viewpoint of their application in space research, including the special measures required to preserve instrumental accuracy in the magnetic environment of the rocket.

ISSN:0010-7514    

DOI:10.1080/00107516708205511

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

A brief outline of conventional symmetry studies of crystalline solids using Bravais lattices, point groups and space groups is presented, leading up to the recent development by Shubnikov of the idea of antisymmetry and the subsequent derivation of the black and white Bravais lattices and of the black and white point groups and space groups. These groups are also called magnetic groups or Shubnikov groups.

ISSN:0010-7514    

DOI:10.1080/00107516708205512

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

This review illustrates the present state of knowledge and directions of interest in infrared spectroscopy through the discussion of a number of examples of recent work. After a brief introduction the survey falls into three parts. The first is concerned with problems of assignment and interpretation of the spectra of polyatomic molecules, and the calculation of force constants. The second deals with the study of some chemical systems by infrared methods, and in the final section mention is made of a number of specialized topics such as matrix-isolation techniques.

ISSN:0010-7514    

DOI:10.1080/00107516708205513

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

A short review of the theories of crystal growth of perfect and imperfect planeS is given. Experimental evidence of two-dimensional nucleation mechanism of growth of perfect crystal planes is provided for the first time and some crystallographic parameters of this process are determined. A quantitative verification of Frank's theory is given by investigating the growth phenomena on nearly perfect planes. The effect of screw dislocations on crystal growth is studied and some phenomena concerning the influence of surface active impurities on crystal growth and dissolution are reported.

ISSN:0010-7514    

DOI:10.1080/00107516708205514

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor

摘要:

The Quest for Absolute Zero. By K. Mendelssohn. (Weidenfeld & Nicolson. 1966.) [Pp. 256.] Paperback, 12s. 6d.; hardback, 25s.

ISSN:0010-7514    

DOI:10.1080/00107516708205515

出版商:Taylor & Francis Group    

年代:1967

数据来源: Taylor