The Relativistic Dynamics of the Combined Particle-Field System in Renormalized Classical Electrodynamics

1998 ◽  
Vol 198 (3) ◽  
pp. 711-736 ◽  
Author(s):  
Hans-Peter Gittel ◽  
Jerzy Kijowski ◽  
Eberhard Zeidler
Keyword(s):  
Classical Electrodynamics ◽  
Relativistic Dynamics ◽  
Particle Field ◽  
Field System

Archaeological Investigations at Mavis Grind, Shetland

1983 ◽  
Vol 10 (1) ◽  
pp. 13-39 ◽  
Author(s):  
Stephen Cracknell ◽  
Beverley Smith
Keyword(s):  
Iron Age ◽  
Early Iron Age ◽  
Second Phase ◽  
Field System ◽  
M 10 ◽  
Settlement Site

Summary The excavations revealed a stone house and showed that it was oval, 13 m × 10 m, with an interior about 7 m in diameter. In the first occupation phase the entrance was on the SE side. During the second phase this entrance was replaced with one to the NE and the interior was partitioned. The roof was supported on wooden posts. After the building was abandoned it was covered with peat-ash which was subsequently ploughed. There were numerous finds of steatite-tempered pottery and stone implements, which dated the site to late Bronze/early Iron Age. The second settlement, Site B, lay by the shore of the voe and consisted of two possible stone-built houses and a field system. Two trenches were dug across the structures and the results are reported in Appendix I. Although damaged in recent years it was in no further danger.

Particle field diagnostics by holography

1980 ◽  
Author(s):  
J. TROLINGER ◽  
R. FIELD
Keyword(s):  
Particle Field

The Internet is a Semicommons

2018 ◽  
Author(s):  
James Grimmelmann
Keyword(s):  
Open Field ◽  
Online Communities ◽  
Strategic Behavior ◽  
Private Property ◽  
The Internet ◽  
Field System ◽  
Technical Features ◽  
Dynamic Interplay ◽  
Enormous Success

78 Fordham Law Review 2799 (2010)The Internet is a semicommons. Private property in servers and network links coexists with a shared communications platform. This distinctive combination both explains the Internet's enormous success and illustrates some of its recurring problems.Building on Henry Smith's theory of the semicommons in the medieval open-field system, this essay explains how the dynamic interplay between private and common uses on the Internet enables it to facilitate worldwide sharing and collaboration without collapsing under the strain of misuse. It shows that key technical features of the Internet, such as its layering of protocols and the Web's division into distinct "sites," respond to the characteristic threats of strategic behavior in a semicommons. An extended case study of the Usenet distributed messaging system shows that not all semicommons on the Internet succeed; the continued success of the Internet depends on our ability to create strong online communities that can manage and defend the infrastructure on which they rely. Private and common both have essential roles to play in that task, a lesson recognized in David Post's and Jonathan Zittrain's recent books on the Internet.

Electromagnetic Radiation

2019 ◽  
Author(s):  
Richard R. Freeman ◽  
James A. King ◽  
Gregory P. Lafyatis
Keyword(s):  
Electromagnetic Radiation ◽  
Energy Transport ◽  
Radiation Reaction ◽  
Classical Electrodynamics ◽  
X Rays ◽  
Field Equations ◽  
Radio Frequency Radiation ◽  
Relativistic Treatment ◽  
Time Variations ◽  
Radiation Science

Electromagnetic Radiation is a graduate level book on classical electrodynamics with a strong emphasis on radiation. This book is meant to quickly and efficiently introduce students to the electromagnetic radiation science essential to a practicing physicist. While a major focus is on light and its interactions, topics in radio frequency radiation, x-rays, and beyond are also treated. Special emphasis is placed on applications, with many exercises and homework problems. The format of the book is designed to convey the basic concepts of a topic in the main central text in the book in a mathematically rigorous manner, but with detailed derivations routinely relegated to the accompanying side notes or end of chapter “Discussions.” The book is composed of four parts: Part I is a review of basic E&M, and assumes the reader has a had a good upper division undergraduate course, and while it offers a concise review of topics covered in such a course, it does not treat any given topic in detail; specifically electro- and magnetostatics. Part II addresses the origins of radiation in terms of time variations of charge and current densities within the source, and presents Jefimenko’s field equations as derived from retarded potentials. Part III introduces special relativity and its deep connection to Maxwell’s equations, together with an introduction to relativistic field theory, as well as the relativistic treatment of radiation from an arbitrarily accelerating charge. A highlight of this part is a chapter on the still partially unresolved problem of radiation reaction on an accelerating charge. Part IV treats the practical problems of electromagnetic radiation interacting with matter, with chapters on energy transport, scattering, diffraction and finally an illuminating, application-oriented treatment of fields in confined environments.

scholarly journals Radiocarbon Dates from an Upland Site of the Kona Field System, Hawai'I Island, Hawaii

Radiocarbon ◽  
1986 ◽  
Vol 28 (3) ◽  
pp. 1227-1227
Author(s):  
C T Kawachi
Keyword(s):  
West Coast ◽  
The West ◽  
Radiocarbon Dates ◽  
Field System ◽  
Agricultural Site

The following samples were excavated in July 1985 in an upland (elev 609.6m) prehistoric agricultural site in the Kona Field System on the west coast of Hawai'i Island.

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