• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 336
  • 78
  • 68
  • 25
  • 14
  • 6
  • 6
  • 6
  • 6
  • 6
  • 6
  • 5
  • 5
  • 3
  • 3
  • Tagged with
  • 585
  • 228
  • 113
  • 100
  • 93
  • 88
  • 70
  • 68
  • 66
  • 58
  • 54
  • 51
  • 50
  • 48
  • 42
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

Electromagnetic forces in flexible systems

Hong, Jia-Sheng January 1994 (has links)
Some problems in electro dynamics have been studied in the light of electromagnetic field theory and computational techniques. One is that of the retrograde motion of the electric arc – an old and intriguing problem of physics. A more complete model based on electrodynamics has been proposed for study of this problem. In this model, the plasma column is treated as a flexible conductor. The associated 3-dimensional boundary-value problem was solved by the boundary element method (BEM). It has been shown that the retrograde motion can indeed be understood in terms of electrodynamics and a number of the reported features of this phenomenon have been explained by the proposed model. The others are concerned with a recent controversy in electrodynamics. It has been discussed in the thesis that Lorentz and Ampere force laws are equivalent in the sense of magnetostatics provided that the latter is appropriately used. The interactions of electromagnetic forces on the systems of the electromagnetic jet propulsion and the electromagnetic impulse pendulum have been examined. It turns out that the observations are consistent with the laws of electromagnetic energy and momentum. Two aspects of the water-arc explosion problem have been studied. One is the electromagnetic (EM) aspect which is calculated by the method of separation of the variables, the other is the magnetohydrodyuamic (MHD) aspect which is solved by the finite difference method (FDM). The numerical results of the two aspects show that neither the pure EM model nor the MHD model for the incompressible fluid could explain the explosive phenomenon; this strongly suggests that the shock wave produced by the under-water arc must account for the phenomenon. On the wire fragmentation, a preliminary study has shown that this phenomenon could be caused by the electromagnetically driven stress waves and a theoretical model has been proposed for further investigation. This is described in an Appendix to the thesis.

Differential forms applied to electromagnetism

Murphy, Raymond Cunningham January 1975 (has links)
No description available.

Short nuclear lifetime measurements.

Cheung, Hay Chiu. January 1969 (has links)
No description available.

Optimal design of permanent magnet generators /

Sobhi-Najafabadi, Bijan. Unknown Date (has links)
Thesis (PhDInformationEngineering )--University of South Australia, 2002.

An enhanced methodology for permanent magnet generator design /

Sobhi-Najafabadi, Bijan. Unknown Date (has links)
Thesis (MEng)--University of South Australia, 1997

Fine element tearing and interconnecting for the electromagnetic vector wave equation in two dimensions /

Marchand, Renier Gustav. January 2007 (has links)
Thesis (MScIng)--University of Stellenbosch, 2007. / Bibliography.

Methods of reducing the possible health hazards of 60-Hz magnetic fields

Alnajjar, Hisham. January 1988 (has links)
Thesis (M.S.)--Ohio University, August, 1988. / Title from PDF t.p.

Time-harmonic and transient electromagnetic fields in spherical cavities with walls of arbitrary electrical properties

Butler, Chalmers M. January 1962 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1962. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves [104]-108).

Electromagnetic aftereffects of near-death experiences

Nouri, Farnoosh Massoudian. Holden, Janice Miner, January 2008 (has links)
Thesis (Ph. D.)--University of North Texas, August, 2008. / Title from title page display. Includes bibliographical references.

Über die Anwendung der Vierpoltheorie auf magnetische Kreise ...

Osken, Helmuth, January 1936 (has links)
Inaug.-diss.--Frankfurt-am-Main. / Lebenslauf. "Literaturverzeichnis:" p. 39.

Page generated in 0.0981 seconds