Zobrazeno 1 - 10
of 45
pro vyhledávání: '"E H Putley"'
Autor:
E H Putley and D E Burgess
Publikováno v:
Physics Education; Jan1984, Vol. 19 Issue 1, p20-23, 4p
Autor:
E. H. Putley
Publikováno v:
Contemporary Physics. 16:101-126
After describing the discovery and early history of the Hall effect and the part it played in the development of theories of electronic conduction, the application of the Hall effect to semiconductor research is discussed. Experimental techniques for
Autor:
E. H. Putley
Publikováno v:
Ferroelectrics. 33:207-216
After reviewing briefly the characteristics of pyroelectric detectors (including the pyroelectric vidicon) the principal applications of pyroelectric devices are discussed. These range from high technology applications such as radiometers in weather
Autor:
E H Putley
Publikováno v:
Physics in Technology. 17:32-37
Is `spin-off' from defence research an efficient way of developing technologies of more general use? The history of IR research provides some clues.
Autor:
E. H. Putley
Publikováno v:
Physics in Technology. 16:13-18
This article shows how RSRE was formed from the amalgamation of research establishments involved in the development of radar for the second world war, and, how its expertise in electronics, optics and computing has led to a key role in developing Bri
Autor:
E H Putley
Publikováno v:
Journal of Scientific Instruments. 43:857-868
Infra-red detectors can be divided into two types: those which depend upon heating effects produced by the absorbed radiation (thermal detectors) and those which make use of photoconductive effects. The characteristics of the more important members o
Autor:
W H Mitchell, E. H. Putley
Publikováno v:
Proceedings of the Physical Society. 72:193-200
The electrical conductivity and Hall effect have been measured over the temperature range 20°K to 500°K on single crystals of silicon with extrinsic carrier concentrations between 2 and 5 × 1012 cm-3. The Hall mobility for electrons and holes can
Autor:
E H Putley
Publikováno v:
Proceedings of the Physical Society. 73:128-131
Autor:
E H Putley
Publikováno v:
Proceedings of the Physical Society. Section A. 62:284-292
Measurements of the electrical conductivity of germanium are described. The results can be explained by the theoretical calculations of Shifrin (1944). An account is given of the relevant part of Shifrin's work. The experimental results are used to d
Publikováno v:
IEEE Transactions on Sonics and Ultrasonics. 19:263-268
Study of the pyroelectric properties of a number of ferroelectric materials has shown that they can be used as sensitive infrared detectors suitable for use in thermal imaging systems. In particular when single domain triglycine sulphate elements of