James R. Wait’s research while affiliated with University of Toronto and other places

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Publications (4)


A Transient Magnetic Dipole Source in a Dissipative Medium
  • Article

April 1953

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10 Reads

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19 Citations

James R. Wait

The solution is given for the electric field of a small current‐carrying loop which is immersed in a dissipative medium and is energized by a step‐function current. Approximate expressions for the magnetic fields are also derived. The propagation of an electromagnetic pulse in sea water is then discussed.



The Magnetic Dipole Antenna Immersed in a Conducting Medium

October 1952

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80 Reads

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49 Citations

Proceedings of the IRE

The magnetic dipole antenna or small current-carrying loop immersed in a conducting medium is investigated. Explicit expressions for the fields are derived for the case when there is a spherical insulating cavity enclosing the dipole. The power radiated from the insulated dipole is discussed and an explicit expression for the total power is given for the case when all displacement currents in the media are negligible.


A Conducting Sphere in a Time Varying Magnetic Field

October 1951

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79 Reads

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150 Citations

Geophysics

The secondary magnetic fields are evaluated for the case of a conducting sphere in a relatively poorly conducting medium under the influence of a time varying magnetic field. The sinusoidal and step function responses are both considered. The responses so calculated are thought to be useful in a geophysical prospecting method which utilizes the transient behavior of induced eddy currents in a highly conducting ore zone.

Citations (4)


... To reduce the negative influence of the surrounding medium, the coil can be contained by an insulated capsule [48], [49]. The efficiency of this method was demonstrated with respect to the transmitted field and the SRF (see Appendix C). ...

Reference:

Channel Capacity of Magnetic Communication in a General Medium Incorporating Full-Wave Analysis and High-Frequency Effects
The Magnetic Dipole Antenna Immersed in a Conducting Medium
  • Citing Article
  • October 1952

Proceedings of the IRE

... A Heaviside step-on signal modulated by a constant carrier frequency propagating in a single resonance Lorentz [61] medium resulted in pulse distortion. The propagation of a transient electromagnetic pulse was studied theoretically in 1953 by Wait [62], where a magnetic dipole in seawater was energized by a step function current. ...

A Transient Magnetic Dipole Source in a Dissipative Medium
  • Citing Article
  • April 1953