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Prof. Andre K. T. Assis
assis@ifi.unicamp.br
Tel: +55 (19) 35215515

Institute of Physics
University of Campinas
Campinas, SP 13083-859
Brazil

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View count: 2246
Assis, Prof. Andre K. T.     (Easy Link: http://www.worldsci.org/people/Andre_Assis)
Professor of Physics

Interests: Gravity, Electromagnetism, Electrodynamics, Iaad, Mach's Principle, Tired Light, Weber's Electrodynamics, Ampere's Force between Current Elements
Nationality: Brazilian
Member since: 1997
Age: 55
Born: Saturday, August 11, 1962

Related Websites:
Apeiron Andre Assis


Edited Journals:
Apeiron

Books:
2014Relational Mechanics and Implementation of Mach\'s Principle with Weber\'s Gravitational Force
2013Elektrischer Strom und Oberfl?chenladungen: was Wilhelm Weber schon vor mehr als 150 Jahren wusste
2013Mec?nica Relacional e Implementa??o do Princ?pio de Mach com a For?a de Weber Gravitacional
2012Stephen Gray e a Descoberta dos Condutores e Isolantes: Tradu??o Comentada de Seus Artigos sobre Eletricidade e Reprodu??o de Seus Principais Experimentos
2012The Illustrated Method of Archimedes: Utilizing the Law of the Lever to Calculate Areas, Volumes and Centers of Gravity
2011Eletrodin?mica de Amp?re: An?lise do Significado e da Evolu??o da For?a de Amp?re, Juntamente com a Tradu??o Comentada de Sua Principal Obra sobre Eletrodin?mica
2011Webers Planetary Model of the Atom
2010Archimedes, the Center of Gravity, and the First Law of Mechanics: The Law of the Lever
2010Os Fundamentos Experimentais e Historicos da Eletricidade
2010The Experimental and Historical Foundations of Electricity
2008Arquimedes, o Centro de Gravidade e a Lei da Alavanca
2007The Electric Force of a Current: Weber and the Surface Charges of Resistive Conductors Carrying Steady Currents
2001Inductance and Force Calculations in Electrical Circuits
1999Relational Mechanics
1998Mecanica Relacional
1994Webers Electrodynamics
1992Curso de Eletrodinamica de Weber

Abstracts Online:
1994Kirchhoff on the Motion of Electricity in Conductors
1995History of the 2.7 K Temperature Prior to Penzias and Wilson
2000Mass in Relational Mechanics
1999Applications of the Principle of Physical Proportions to Gravitation
1989Modern Experiments Related to Weber's Electrodynamics
1992On the Mechanism of Railguns
1997The Problem of Surface Charges and Fields in Coaxial Cables and its Importance for Relativistic Physics
1999The Meaning of the Constant c in Weber's Electrodynamics
2004Virial Theorem for Weber's Law
2002The Relationship Between Mach's Principle and the Principle of Physical Proportions
2000The Principle of Physical Proportions and Some Applications
1999Arguments in Favour of Action at a Distance
1994Unipoplar Induction and Weber's Electrodynamics
1999Charged Particle Oscillating Near a Capacitor
2011Consequences of Relational Time
1991Can a Steady Current Generate an Electric Field?

Media Online:
2010-11-06VideoWeber's Electrodynamics
2009-10-24VideoRelational Mechanics
2004VideoUniverse - The Cosmology Quest - Part 1
2004VideoUniverse - The Cosmology Quest - Part 2
1998-09-07VideoTalk Show Interview in Brazil - Part 1
1998-09-07VideoTalk Show Interview in Brazil - Part 2

Event Attendence:
2011-10-08The Meaning of Maxwell's Equations, Part 3: Gauss' B LawVideo Conference
2011-09-03The Electric Force of a CurrentVideo Conference
2011-07-0618th Natural Philosophy Alliance ConferenceConference (Absentia)
2010-11-06Weber's ElectrodynamicsVideo Conference
2010-10-02Gravitomagnetism: Successes in Explaining the CosmosVideo Conference
2010-09-11Planetary Scarring in an Electric UniverseVideo Conference
2010-03-06The Conflict Between Action at a Distance and Field TheoriesVideo Conference
2009-11-07The Electrodynamic Origin of the Force of Inertia (F = ma)Video Conference
2009-10-24Relational MechanicsVideo Conference
2009-10-17Instances of Relativistic Illogic (With a GPS Assist)Video Conference
2009-09-13The Electric UniverseVideo Conference
2009-08-30The Ten Assumptions of Science: First Steps in the Overthrow of the Big Bang Theory (Part 1)Video Conference
2008-09-072nd Crisis in Cosmology Conference (CCC-2)Conference
2002-07-01Physics as a Science IIIConference
2002-02-06International Workshop on Mach's Principle and the Origin of InertiaConference
2000-06-057th Natural Philosophy Alliance ConferenceConference
1999-09-17Redshifts and Gravitation in a Relativistic UniverseConference
1999-05-26Galileo Back in Italy IIConference
1997-06-25International Conference on Special Relativity and Some of its ApplicationsConference
1993-09-27Frontiers of Fundamental PhysicsConference
1989-01-01Foundations of Mathematics & Physics in the 20th Century: The Rejection of IntuitionConference

Biography

Andre Koch Torres Assis is a Professor of physics at the State University of Campinas, in Brazil, working with gravitation (Relational Mechanics, Mach's principle and the origin of inertia, absorption of gravity), electromagnetism (Weber's electrodynamics, Ampere's force between current elements, electric field outside resistive wires carrying steady currents, propagation of electromagnetic signals), cosmology (Hubble's law of redshifts, cosmic background radiation, tired light, infinite universe in space and time) and history of science.

Andre Koch Torres Assis was born in Brazil (1962) and educated at the University of Campinas - UNICAMP, BS (1983), PhD (1987). He spent the academic year of 1988 in England with a post-doctoral position at the Culham Laboratory (United Kingdom Atomic Energy Authority). He spent one year in 1991-92 as a Visiting Scholar at the Center for Electromagnetics Research of Northeastern University (Boston, USA). From August 2001 to November 2002, and from February to May 2009, he worked at the Institute for the History of Natural Sciences, Hamburg University (Hamburg, Germany) with research fellowships awarded by the Alexander von Humboldt Foundation of Germany. He is the author of Weber's Electrodynamics (1994), Relational Mechanics (1999), Inductance and Force Calculations in Electrical Circuits (with M. A. Bueno, 2001), The Electric Force of a Current (with J. A. Hernandes, 2007), Archimedes, the Center of Gravity, and the First Law of Mechanics (2008), The Experimental and Historical Foundations of Electricity (2010), and Weber's Planetary Model of the Atom (with K. H. Widerkehr and G. Wolfschmidt, 2011). He has been professor of physics at UNICAMP since 1989, working on the foundations of electromagnetism, gravitation, and cosmology.


Journals Edited by Prof. Andre K. T. Assis



Name: Apeiron
Editors: Roy Keys, Dr. Halton C. Arp, Prof. Andre K. T. Assis, Dr. Peter Graneau
Status: Active
Founded: 1987
Website: redshift.vif.com
Contact Name: Roy Keys
Description:

Apeiron is a scientific journal devoted to cosmology and fundamental physics. It publishes only convincingly argued, adequately documented papers in English, as well as English translations of historically important texts.

Apeiron - Wikipedia


Books by Prof. Andre K. T. Assis



View count: 13126
Relational Mechanics

by Prof. Andre K. T. Assis

Pages: 285
Publisher: C. Roy Keys Inc. (Apeiron)
Year: 1999
ISBN: 0968368921
ISBN: 978-0968368923

Websites: www.ifi.unicamp.br/~assis

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Description

Relational Mechanics is a new mechanics that replaces Einstein's theories of relativity. It implements Mach's principle quantitatively based on Weber's relational law and the principle of dynamical equilibrium. It explains Newton's bucket experiment as due to gravitational interaction between the water and the distant universe when in relative rotation. The book is intended for physicists, engineers, mathematicians, historians, philosophers of science and students.



View count: 9895
The Electric Force of a Current: Weber and the Surface Charges of Resistive Conductors Carrying Steady Currents

by Prof. Andre K. T. Assis, J. A. Hernandes

Pages: 254
Publisher: C. Roy Keys Inc. (Apeiron)
Year: 2007
ISBN: 097329115X
ISBN: 978-0973291155

Websites: www.ifi.unicamp.br/~assis redshift.vif.com/Apeiron_Home.htm

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Description

The Electric Force of a Current analyzes the electric force between a charge and a circuit carrying a steady current when they are at rest relative to one another. It presents experiments and analytical calculations showing the existence of this force, contrary to the statements of many scientists. The force is proportional to the voltage of the battery connected to the resistive circuit. It also includes calculations of the potential and electric field inside and outside resistive conductors carrying steady currents, and the distribution of charges along the surface of the conductors that generate this field. It contains two appendices that discuss the pioneering and revolutionary works of Wilhelm Weber and Gustav Kirchhoff, and a substantial bibliography of modern literature on the topic.


View count: 25595
Webers Electrodynamics

by Prof. Andre K. T. Assis

Pages: 292
Publisher: Springer
Year: 1994
ISBN: 0792331370
ISBN: 978-0792331377

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Description

This volume is a substantially complete presentation of the electrodynamics developed by Wilhelm Weber. Weber's force between point charges is explored and thoroughly analysed. Amp?re's force between current elements is discussed in connection with modern experiments relating to the Amp?re versus Grassmann--Biot--Savart controversy. Amp?re's force is a central feature of this work, as Maxwell maintained it should always be in the study of electrodynamics, although it is included in few textbooks on electromagnetism. A detailed study of this force is an outstanding feature of this book. Other topical questions of physics are analysed, such as a potential-dependent inertial mass, Mach's principle and the origin of inertia, action at a distance as opposed to contact actions, etc. No previous knowledge of the subject is required, and all topics are introduced with both their historical backgrounds as well as modern experimental evidence.

This volume will appeal to physicists, mathematicians, electrical and electronic engineers, historians and philosophers of science.



View count: 8139
Inductance and Force Calculations in Electrical Circuits

by Prof. Andre K. T. Assis

Pages: 135
Publisher: Nova Science Publishers
Year: 2001
ISBN: 1560729171
ISBN: 978-1560729174

Websites: www.ifi.unicamp.br/~assis https://www.novapublishers.com/catalog/index.php
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Description

This book deals with the two fundamental subjects of electromagnetism. It is a useful text for courses in electromagnetism, electrical circuits, mathematical methods of physics, and the history and philosophy of science. It covers how to calculate force between two current carrying circuits, and net force on a part of a closed circuit. The calculation of the mutual inductance between two circuits and self-inductance of a single closed circuit is also described. Experiments explain the main expressions of Ampere and Grassmann. A must to help deepen the knowledge of the mind of any student of science.


View count: 9733
Os Fundamentos Experimentais e Historicos da Eletricidade

by Prof. Andre K. T. Assis

Pages: 274
Publisher: Apeiron
Year: 2010
ISBN: 0986492612
ISBN: 978-0986492617

Websites: redshift.vif.com/BookBlurbs/Fundamentos.htm

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Description

Os Fundamentos Experimentais e Hist?ricos da Eletricidade ? um livro que lida com os aspectos fundamentais da f?sica. Descreve as principais experi?ncias e descobertas da hist?ria da eletricidade. Come?a com o efeito ?mbar, que ? an?logo ? experi?ncia usual de atrair papeizinhos com um pl?stico atritado no cabelo. Mostra-se como construir e utilizar diversos instrumentos el?tricos: versorium, p?ndulo el?trico, eletrosc?pio e coletores de carga. Discute-se a atra??o e a repuls?o el?trica, o mecanismo ACR (atra??o, contato e repuls?o), assim como as cargas positivas e negativas. Analisa-se detalhadamente os conceitos de condutores e de isolantes, assim como as principais diferen?as nos comportamentos destes dois tipos de subst?ncias. Parte-se sempre das observa??es experimentais para ent?o ir construindo os conceitos, as defini??es e as leis que descrevem estes fen?menos. Todas as experi?ncias s?o descritas com clareza e realizadas com materiais simples, baratos e facilmente acess?veis. Sempre que poss?vel s?o apresentados aspectos hist?ricos relacionados com os fen?menos que est?o sendo analisados, juntamente com cita??es relevantes dos principais cientistas que trabalharam com estes assuntos. ? feita uma an?lise detalhada das obras de Stephen Gray (1666-1736), o grande cientista ingl?s que descobriu os condutores e isolantes, assim como algumas de suas principais propriedades. Uma ampla bibliografia ? inclu?da no final da obra.


View count: 7832
The Experimental and Historical Foundations of Electricity

by Prof. Andre K. T. Assis

KeyWords: electricity, electrostatics, conductors and insulators, Stephen Gray

Pages: 268
Publisher: Apeiron
Year: 2010
ISBN: 9780986492631

Websites: redshift.vif.com/

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Description

The Experimental and Historical Foundations of Electricity deals with the most fundamental aspects of physics. The book describes the main experiments and discoveries in the history of electricity. It begins with the amber effect, which is analogous to the usual experiment of attracting small pieces of paper with a plastic rubbed in hair. It is explained how to build several instruments: versorium, electric pendulum, electroscope and charge collectors. It is discussed electric attraction and repulsion, positive and negative charges, and the ACR mechanism (attraction, communication of electricity, and repulsion). It is analyzed the concepts of conductors and insulators, together with the main differences in the behaviours of these two kinds of substances. All experiments are clearly described and performed with simple, inexpensive materials. These experiments lead to clear concepts, definitions, and laws describing these phenomena. Historical aspects are presented, together with relevant quotations from the main scientists. The book presents an exhaustive analysis of the work of Stephen Gray (1666-1736), the great British scientist who discovered conductors and insulators, together with some of their main properties. A large bibliography is included at the end of the work.


View count: 12246
Curso de Eletrodinamica de Weber

by Prof. Andre K. T. Assis

KeyWords: Wilhelm Weber, eletrodinamica, forca de Ampere

Pages: 140
Publisher: Setor de Publicacoes do Instituto de Fisica da Universidade Estadual de Campinas
Year: 1992


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Description

Este livro apresenta a eletrodin?mica desenvolvida por Wilhelm Weber (1804-1891). Ela ? baseada em uma lei de for?a que depende n?o apenas da dist?ncia entre as cargas mas tamb?m da velocidade relativa entre elas e da acelera??o relativa entre elas. Mostra-se como deduzir a for?a de Amp?re entre elementos de corrente. Compara-se a for?a de Weber com a for?a de Lorentz. Uma ampla bibliografia ? apresentada ao final do livro.


View count: 8865
Mecanica Relacional

by Prof. Andre K. T. Assis

KeyWords: Mecanica Relacional, principio de Mach, lei de Weber para a gravitacao

Pages: 349
Publisher: Editora do Centro de Logica e Epistemologia da Universidade Estadual de Campinas
Year: 1998
ISBN: 8586497010

Websites: www.cle.unicamp.br/index.php/

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Description

A Mec?nica Relacional ? uma nova mec?nica que tem como objetivo ser um substituto para as teorias da relatividade de Einstein. Ela implementa o princ?pio de Mach quantitativamente com base em uma lei de Weber para a gravita??o, juntamente com o princ?pio de equil?brio din?mico. Ela explica a experi?ncia do balde de Newton como sendo devida ? intera??o gravitacional entre a ?gua e as gal?xias distantes quando h? uma rota??o relativa entre a ?gua e o conjunto das gal?xias distantes. O livro ? destinado a f?sicos, engenheiros, matem?ticos, historiadores e fil?sofos da ci?ncia, assim como aos estudantes.


View count: 8910
Arquimedes, o Centro de Gravidade e a Lei da Alavanca

by Prof. Andre K. T. Assis

KeyWords: Arquimedes, centro de gravidade, lei da alavanca

Pages: 243
Publisher: Apeiron
Year: 2008
ISBN: 9780973291179

Websites: redshift.vif.com/

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Description

Arquimedes, o Centro de Gravidade e a Lei da Alavanca ? um livro que lida com os aspectos fundamentais da f?sica. Descreve os principais eventos na vida de Arquimedes e o conte?do de suas obras. Discute um grande n?mero de experi?ncias relacionadas com o equil?brio de corpos suspensos que est?o sob a a??o gravitacional terrestre. Todas as experi?ncias s?o descritas com clareza e realizadas com materiais simples, baratos e facilmente acess?veis. Estas experi?ncias levam a uma defini??o conceitual precisa do centro de gravidade e ilustram procedimentos pr?ticos para encontr?-lo com precis?o. S?o analisadas as condi??es de equil?brio est?vel, neutro e inst?vel. S?o descritos e explicados muitos brinquedos de equil?brio. Aspectos hist?ricos relacionados a este conceito s?o apresentados, juntamente com os valores te?ricos do centro de gravidade de diversos corpos obtidos por Arquimedes. O livro tamb?m explica como construir e calibrar balan?as e alavancas precisas e sens?veis. S?o realizadas diversas experi?ncias com estes instrumentos at? se chegar a uma defini??o matem?tica do centro de gravidade e ? lei da alavanca, tamb?m chamada de primeira lei da mec?nica. S?o descritas diversas conseq??ncias desta lei, assim como diferentes demonstra??es de como se chegar nela. ? feita uma an?lise detalhada das obras de Euclides e de Arquimedes, assim como uma tradu??o de duas obras destes autores. Uma ampla bibliografia ? inclu?da no final da obra.


View count: 12017
Archimedes, the Center of Gravity, and the First Law of Mechanics: The Law of the Lever

by Prof. Andre K. T. Assis

KeyWords: Archimedes, classical mechanics, law of the lever

Pages: 233
Publisher: Apeiron
Year: 2010
ISBN: 9780986492648

Websites: redshift.vif.com/

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Description

This is the second edition of a book originally published in 2008.

One of the goals of this book is to present the basic phenomena of mechanics through simple experiments performed with inexpensive materials. We present the fundamental experiments on falling bodies, equilibrium and oscillations around equilibrium positions. We also show how the theoretical concepts are formed and modified during this process, just as occurred in the formulation of the basic laws of mechanics.

We show how more complex phenomena can be explained and clarified by means of elementary experiments. Playful and curious experiments are also presented. They stimulate creativity, critical thinking and a sense of humour in science. They also relate everyday phenomena to the fundamental laws of physics.

The emphasis is placed on experimental activities. After the experiments we formulate the definitions, concepts, postulates, principles, and laws describing the phenomena. The materials utilized are very simple, easily found at home or in stores, all of them very inexpensive. Even so, we can carry out very precise experiments and construct sensitive scientific equipment. The reader need not depend on any school or research laboratory, as he can build his own equipment and perform all the measurements.

If the experiments presented here are performed in the classroom, each student should ideally perform all the tasks, even when working in a group. Each one should build his own equipment (support, plumb line, lever, etc.), cut out his geometric figures and then take all this personal material home. This procedure is richer in lessons than simple demonstrations of the effects by a teacher. It is essential that all students put their hands to the plough.

The book is also rich in historical information, which gives the context in which some laws were discovered, and also different approaches taken in discovering them. We are careful about in formulating concepts and physical principles. It will be seen, for example, how difficult is to find the correct words to precisely define the center of gravity so that this concept can encompass a whole series of experiments. We distinguish clearly between definitions, postulates, experimental results, and physical laws. We also distinguish explanations from descriptions of phenomena. These aspects illustrate the sociological and human aspects of the formulation of physical laws.

This book is written for students and teachers of science, physics, and mathematics. It can be utilized at High Schools or at Universities, depending on the level at which each aspect is analyzed and explored. It has enough experimental and theoretical material to be employed in all levels of teaching. Each teacher should adapt the contents presented here to his own school environment. It can also be utilized in courses on the history and philosophy of science.

The best way to grasp the contents of the book is to perform the majority of the experiments described here in parallel with the reading. There are many philosophical, theoretical, and mathematical approaches relating to physical science. But physics is essentially an experimental science. It is the combination of all these aspects that make it so fascinating. For this reason we strongly recommend that the experiments presented in the book be repeated and improved. We hope that the reader will have the same pleasure in performing these experiments as we had in developing them.



View count: 28807
Webers Planetary Model of the Atom

by Prof. Andre K. T. Assis, K. H. Wiederkehr and G. Wolfschmidt

KeyWords: Wilhelm Weber, planetary model of the atom, Weber's electrodynamics

Pages: 184
Publisher: Tredition Science
Year: 2011
ISBN: 9783842402416

Websites: www.tredition.de/?books/ID2355/Weberrs-Planetary-Model-of-the-Atom
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Description

This book describes the planetary model of the atom developed by Wilhelm Weber (1804-1891). It is based on Weber's electrodynamic force of 1846 which is a generalization of Coulomb's law, with the force depending also upon the relative radial velocity between the charges and upon the relative radial acceleration between them. He began to conceive his planetary model of the atom by considering the nature of Amp?re's stable molecular currents. According to Weber's force, two charges of the same sign behave with a negative effective inertial mass when they are very close to one another, so that they should attract one another instead of repelling one another. He could then propose in the 1870's and 1880's a planetary model of the atom with a nucleus composed of positive charges held together by his electrodynamic force law, so that it was not necessary to postulate nuclear forces to stabilize the nucleus. He proposed negative charges orbiting around this positive nucleus. All of this was accomplished before the discovery of the electron and before the atomic models of Rutherford and Bohr. There are many quotations of original works and a large bibliography is included in the text.


View count: 12433
The Illustrated Method of Archimedes: Utilizing the Law of the Lever to Calculate Areas, Volumes and Centers of Gravity

by Prof. Andre K. T. Assis, C. P. Magnaghi

KeyWords: Archimedes, method of Archimedes, center of gravity

Pages: 46
Publisher: Apeiron
Year: 2012
ISBN: 9780986492679

Websites: redshift.vif.com/

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View count: 10387
Mec?nica Relacional e Implementa??o do Princ?pio de Mach com a For?a de Weber Gravitacional

by Prof. Andre K. T. Assis

KeyWords: Relational mechanics, Mach's principle, Weber's law, Weber's electrodynamics

Pages: 459
Publisher: Apeiron
Year: 2013
ISBN: 978-0986492693

Websites: redshift.vif.com/

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View count: 9478
Eletrodin?mica de Amp?re: An?lise do Significado e da Evolu??o da For?a de Amp?re, Juntamente com a Tradu??o Comentada de Sua Principal Obra sobre Eletrodin?mica

by Prof. Andre K. T. Assis, J. P. M. d. C. Chaib

KeyWords: Amp?re's electrodynamics, Amp?re, electrodynamics, Weber

Pages: 589
Publisher: Editora da Unicamp
Year: 2011
ISBN: 9788526809383

Websites: www.editora.unicamp.br/
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View count: 7972
Stephen Gray e a Descoberta dos Condutores e Isolantes: Tradu??o Comentada de Seus Artigos sobre Eletricidade e Reprodu??o de Seus Principais Experimentos

by S. L. B. Boss, Prof. Andre K. T. Assis, J. J. Caluzi

KeyWords: Stephen Gray, conductors, insulators, electrets

Pages: 458
Publisher: Editora Cultura Acad?mica da Unesp
Year: 2012
ISBN: 9788579833748

Websites: www.culturaacademica.com.br/catalogo-detalhe.asp?ctl_id=354
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View count: 9877
Elektrischer Strom und Oberfl?chenladungen: was Wilhelm Weber schon vor mehr als 150 Jahren wusste

by Prof. Andre K. T. Assis, J. A. Hernandes

KeyWords: Wilhelm Weber, electrodynamics, surface charges, external electric field

Pages: 218
Publisher: Apeiron
Year: 2013
ISBN: 978-0-9920456-0-9

Websites: redshift.vif.com/

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View count: 11057
Relational Mechanics and Implementation of Mach's Principle with Weber's Gravitational Force

by Prof. Andre K. T. Assis

KeyWords: Relational mechanics, Mach's principle, Weber's law, Wilhelm Weber

Pages: 542
Publisher: Apeiron
Year: 2014
ISBN: 9780992045630

Websites: redshift.vif.com/

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Papers by Prof. Andre K. T. Assis



Kirchhoff on the Motion of Electricity in Conductors

(1994)

Dr. Peter Graneau
205 Holden Wood Road, Concord, MA 01742, United States; petergraneau@aol.com, (978) 369-7936
Prof. Andre K. T. Assis
Institute of Physics, University of Campinas, Campinas, SP 13083-859, Brazil; assis@ifi.unicamp.br, +55 (19) 35215515, www.ifi.unicamp.br/~assis



Apeiron, Volume 1, pp. 19-25
Keywords: Kirchhoff''s paper of 1857, laws of Newtonian electrodynamics, before Maxwell

Lookup: electrodynamics (68), newtonian (13), laws (13), maxwell (22)

Abstract:

We comment on and translate Gustav Kirchhoff?s important paper of 1857 entitled ?On the motion of electricity in conductors.? The significance of this paper is that Kirchhoff proved with action at a distance that electric disturbances travel along wires of negligible resistance with the velocity of light. He accomplished this with the laws of Newtonian electrodynamics (Coulomb, Ampere, F. Neumann and Weber) before Maxwell had formulated his equations.



History of the 2.7 K Temperature Prior to Penzias and Wilson

(1995)

Prof. Andre K. T. Assis
Institute of Physics, University of Campinas, Campinas, SP 13083-859, Brazil; assis@ifi.unicamp.br, +55 (19) 35215515, www.ifi.unicamp.br/~assis
Marcos C. D. Neves
Funda Universidade Estadual de Maring, Centro de Ci?ncias Exatas , Departamento de Fisica - UEM, Av. Colombo, 5790, Zona 7 - Maringa, PR 87020-900, Brazil; macedane@yahoo.com, 44 2614331, www.dfi.uem.br/~macedane/curriculum.htm



Apeiron, Volume 2, No. 3, pp. 79-87
Keywords: 2.7 K temperature, dynamical equilibrium, Big Bang

Lookup: big bang (23), big (24), bang (23), temperature (8), equilibrium (5), dynamical (3)

Abstract:

We present the history of estimates of the temperature of intergalactic space. We begin with the works of Guillaume and Eddington on the temperature of interstellar space due to starlight belonging to our Milky Way galaxy. Then we discuss works relating to cosmic radiation, concentrating on Regener and Nernst. We also discuss Finlay-Freundlich's and Max Born's important research on this topic. Finally, we present the work of Gamow and collaborators. We show that the models based on a Universe in dynamical equilibrium without expansion predicted the 2.7 K temperature prior to and better than models based on the Big Bang.




Mass in Relational Mechanics

(2000)

Prof. Andre K. T. Assis
Institute of Physics, University of Campinas, Campinas, SP 13083-859, Brazil; assis@ifi.unicamp.br, +55 (19) 35215515, www.ifi.unicamp.br/~assis
Dr. Jorge A. Guala-Valverde
Laboratorio Julio Palacios, Santiago Del Estere 370, 8300 Neuquen, Argentina; fundacionjuliopalacios@usa.net, +54 (0299) 155804951, www.fjp.org.ar



Apeiron, Volume 7, No. 3-4, pp. 131-132
Keywords: mass density of distant galaxies, free fall, inertial mass density v gravitational mass

Lookup: big bang (23), big (24), bang (23), temperature (8), equilibrium (5), dynamical (3), gravity (124), free (7), mass (94), galaxies (16), inertial (35), density (7)

Abstract:

In (Assis 1998, pp. 241-249) and (Assis 1999, pp. 199-205) it was said that if we double the average matter density of the distant universe (galaxies), while keeping constant the matter density of the earth and all sizes and distances, the acceleration of free fall halves (that is, goes to 4.9m/s2 instead of the usual 9.8m/s2). Guala-Valverde concluded that in this case the acceleration of free fall should go to (9.8m/s2) / 2, see (Guala-Valverde 1999a and 1999b, p. 25). But this was only due to a misunderstanding. Guala-Valverde was thinking on doubling the average inertial mass density of distant galaxies, while Assis was talking of doubling the average gravitational mass density of distant matter (see (Assis 1998, pp. 207, 211 and 246) or (Assis 1999, pp. 170, 174 or 204). This solves all misunderstandings. That is, Guala-Valverde and Assis agree that doubling the gravitational mass density of distant matter (while keeping unalterable Hubble's constant, the gravitational mass of the earth and its radius) will make the acceleration of free fall go to 4.9 m/s2. So our results are not clashing, it was all due to a misunderstanding.



Applications of the Principle of Physical Proportions to Gravitation

(1999)

Prof. Andre K. T. Assis
Institute of Physics, University of Campinas, Campinas, SP 13083-859, Brazil; assis@ifi.unicamp.br, +55 (19) 35215515, www.ifi.unicamp.br/~assis



Gravitation, Electgromagnetism and Cosmology: Toward a New Synthesis , pp. 1-8


1999, Redshifts and Gravitation in a Relativistic Universe, Cesena, Italy
Keywords: relative and absolute magnitudes, relational mechanics

Lookup: mechanics (76), absolute (26), relative (11)

Abstract:

We propose the principle of physical proportions, according to which all laws of physics may depend only on the ratio of quantities of the same type.  We present examples of laws that satisfy this principle, and others that do not.  These examples suggest that the theories leading to these laws must be incomplete.



Modern Experiments Related to Weber's Electrodynamics

(1989)

Prof. Andre K. T. Assis
Institute of Physics, University of Campinas, Campinas, SP 13083-859, Brazil; assis@ifi.unicamp.br, +55 (19) 35215515, www.ifi.unicamp.br/~assis



Proceedings of the Conference on Foundations in Mathematics and Physics , pp. 8-22


1989, Foundations of Mathematics & Physics in the 20th Century: The Rejection of Intuition, Perugia, Italy
Keywords: Weber, Electrodynamics, Experiments

Lookup: weber (4), electrodynamics (68), experiments (25)

Abstract:

We present Weber's force law and the classical results that follow from it.  We discuss the historical controversy surrounding Ampere's law of force between current elements versus Grassmann-Biot-Savart's law.  Then we make a review of modern experiments related to this topic and to the electric field generated by a steady and stationary neutral current.  Finally we analyze some theoretical aspects of Weber's law as its extension through retarded potentials to include electromagnetic radiation, and its relation to alternative interpretations of experiments devised to show the mass radiation with velocity.



On the Mechanism of Railguns

(1992)

Prof. Andre K. T. Assis
Institute of Physics, University of Campinas, Campinas, SP 13083-859, Brazil; assis@ifi.unicamp.br, +55 (19) 35215515, www.ifi.unicamp.br/~assis


Galilean Electrodynamics, Volume 3, No. 5, pp. 93-102
Keywords: railguns, Ampere's force, elecgromagnetic waves, quantitative figures, immobilized projectile

Lookup: weber (4), electrodynamics (68), experiments (25), force (74), waves (40)

Abstract:

Two mechanisms utilized to explain the operation of railguns are explained: one based on Ampere's force and the other on the transfer of momentum through electromagnetic waves. It is shown how the former is compatible with the data while the latter has problems with the quantitative figures and the case of the immobilized projectile.



The Problem of Surface Charges and Fields in Coaxial Cables and its Importance for Relativistic Physics

(1997)

Prof. Andre K. T. Assis
Institute of Physics, University of Campinas, Campinas, SP 13083-859, Brazil; assis@ifi.unicamp.br, +55 (19) 35215515, www.ifi.unicamp.br/~assis
J. I. Cisneros
Institute de Fisica 'Gleb Wataghin', Universidade Esadual de Campina - Unicamp, Campinas, Sao Paulo 13083-970, Brazil



Open Questions in Relativistic Physics , pp. 177-185


1997, International Conference on Special Relativity and Some of its Applications, Athens, Greece
Keywords: surface charges, coaxial cable, classical electrodynamics

Lookup: classical electrodynamics (6), classical (19), electrodynamics (68), charges (4), surface (2)

Abstract:

We calculate the surface charges, potential and fields in a long cylindrical coaxial cable with inner and outer conductors of finite conductivities and finite areas. It is shown that there is an electric field outside the return conductor. PACS: 41.20 -q, 41.20 Gz.



The Meaning of the Constant c in Weber's Electrodynamics

(1999)

Prof. Andre K. T. Assis
Institute of Physics, University of Campinas, Campinas, SP 13083-859, Brazil; assis@ifi.unicamp.br, +55 (19) 35215515, www.ifi.unicamp.br/~assis



Proceedings of the International Conference \"Galileo Back in Italy II\" , pp. 23-36


1999, Galileo Back in Italy II, Bologna, Italy
Keywords: c, Weber Electrodynamics

Lookup: c (3), weber electrodynamics (3), weber (4), electrodynamics (68)

Abstract:

In this work it is analysed three basic electromagnetic systems of units utilized during last century by Amp?re, Gauss, Weber, Maxwell and all the others: The electrostatic, electrodynamic and electromagnetic ones. It is presented how the basic equations of electromagnetism are written in these systems (and also in the present day international system of units MKSA). Then it is shown how the constant c was introduced in physics by Weber's force. It is shown that it has the unit of a velocity and is the ratio of electromagnetic and electrostatit units of charge. Weber and Kohlrausch's experiment to determine c is presented, emphasizing that they were the first to measure this quantity and obtained the same value as that of light velocity in vacuum. It is shown how Kirchoff and Weber obtained independently of one another, both working in the framework of Weber's electrodynamics, the fact that an electromagnetic signal (of current or potential) propagate at light velocity along a thin wire of negligible resistivity.



Virial Theorem for Weber's Law

(2004)

Prof. Andre K. T. Assis
Institute of Physics, University of Campinas, Campinas, SP 13083-859, Brazil; assis@ifi.unicamp.br, +55 (19) 35215515, www.ifi.unicamp.br/~assis



Has the Last Word Been Said on Classical Electrodynamics? , pp. 67-70


Abstract:

We derive the virial theorem for Weber's law applied to gravitation and electromagnetism.



The Relationship Between Mach's Principle and the Principle of Physical Proportions

(2002)

Prof. Andre K. T. Assis
Institute of Physics, University of Campinas, Campinas, SP 13083-859, Brazil; assis@ifi.unicamp.br, +55 (19) 35215515, www.ifi.unicamp.br/~assis



Mach\'s Principle and the Origin of Inertia , pp. 37-44


2002, International Workshop on Mach's Principle and the Origin of Inertia, Kharagpur, India
Keywords: relative and absolute magnitude, Mach's Principle, principle of physical proportions, relational mechanics

Lookup: principle of physical proportions (2), mechanics (76), mach (2), physical (23), principle (57), absolute (26), relative (11), proportions (2)

Abstract:

Mach's principle is compared with the principle of physical proportions. Laws that are compatible and others not compatible with the latter principle are discussed. Avenues for the implementation of this principle are also outlined.



The Principle of Physical Proportions and Some Applications

(2000)

Prof. Andre K. T. Assis
Institute of Physics, University of Campinas, Campinas, SP 13083-859, Brazil; assis@ifi.unicamp.br, +55 (19) 35215515, www.ifi.unicamp.br/~assis

2000, 7th Natural Philosophy Alliance Conference, Storrs, CT, United States
Keywords: Principle of Physical Proportions

Lookup: principle of physical proportions (2), physical (23), principle (57), proportions (2)




Arguments in Favour of Action at a Distance

(1999)

Prof. Andre K. T. Assis
Institute of Physics, University of Campinas, Campinas, SP 13083-859, Brazil; assis@ifi.unicamp.br, +55 (19) 35215515, www.ifi.unicamp.br/~assis



Instantaneous Action at a Distance in Modern Physics: Pro and Contra , pp. 45-56

Keywords: Action-at-a-Distance

Lookup: action at a distance (2), action (17), distance (13)

Abstract:

Several arguments favouring instantaneous action at a distance are presented. The action at a distance laws of Newton, Coulomb, Amp?re and Weber are analysed. Historical evidence that Weber's electrodynamics led to the propagation of electromagnetic signals with finite velocity prior to the development of Maxwell's equations are emphasized. The implementation of Mach's principle with Weber's law applied to gravitation is discussed.



Unipoplar Induction and Weber's Electrodynamics

(1994)

Prof. Andre K. T. Assis
Institute of Physics, University of Campinas, Campinas, SP 13083-859, Brazil; assis@ifi.unicamp.br, +55 (19) 35215515, www.ifi.unicamp.br/~assis
Dario S. Thober
Also Collaborating Professor at the Department of Applied Mathematics, IMEC, Campinas-SP, State University of Campinas 13083-970, Brazil

Frontiers of Fundamental Physics: Proceedings of an International Conference held September 27-30, 1993, in Olympia, Greece , pp. 409-414


1993, Frontiers of Fundamental Physics, Olympia, Greece
Keywords: unipolar induction, electrodynamics, conductor, magnet, relative rotary motion

Lookup: electrodynamics (68), conductor (3), magnet (5), unipolar induction (5), motion (71), relative (11), induction (9), rotary (13), unipolar (6)

Abstract:

Unipolar induction is the generation of current on a conductor for the case in which the conductor and the magnet are in relative rotary motion. A typical case of unipolar induction is shown in figure 1. Since Faraday's experiments of 1932 on electromagnetic induction on rotation systems there are intense debates concerning the location of the seat of the electromotive force (emf)2.



Charged Particle Oscillating Near a Capacitor

(1999)

Prof. Andre K. T. Assis
Institute of Physics, University of Campinas, Campinas, SP 13083-859, Brazil; assis@ifi.unicamp.br, +55 (19) 35215515, www.ifi.unicamp.br/~assis
Galilean Electrodynamics, Volume 10, No. 6, pp. 103-105
Keywords: Weber's electrodynamics, Schr?dinger's mechanics, theory of relativity, potential dependent inertial mass

Lookup: theory of relativity (11), weber electrodynamics (3), theory (173), relativity (390), mechanics (76), weber (4), electrodynamics (68), mass (94), schr?dinger (4), inertial (35), potential (25)

Abstract:

We study the oscillation of a charged particle near a capacitor in four different models: Classical me-chanics, Weber's electrodynamics plus classical mechanics, relativistic mechanics, and Weber's electrodynamics plus the mechanics of Erwin Schr?dinger. We show that only the third and fourth models yield physically reasonable results.



Consequences of Relational Time

(2011)

Prof. Andre K. T. Assis
Institute of Physics, University of Campinas, Campinas, SP 13083-859, Brazil; assis@ifi.unicamp.br, +55 (19) 35215515, www.ifi.unicamp.br/~assis
(Absentia)



Proceedings of the NPA, Volume 8, pp. 36-39

2011, 18th Natural Philosophy Alliance Conference, College Park, MD, United States

Abstract:

There are two competing formulations of time in physics. Newton defended in the Principia the utilization of absolute time which, according to him "flows equably without relation to anything external." Leibniz, on the other hand, was against this concept and proposed relative time to replace it: "As for my opinion, I have said more than once, that I hold space to be something merely relative, as time is; that I hold it to be an order of coexistences, as time is an order of successions." Leibniz's ideas were accepted and developed by Ernst Mach in his book The Science of Mechanics. Mach proposed to replace Newton's absolute time by the angle of rotation of the planets relative to the frame of fixed stars.

In this work we consider the implementation of relational time and its consequences for physics. We concentrate our analysis in a single phenomenon, namely, the flattening of the Earth due to its diurnal rotation. We consider the figure of the Earth in Newtonian mechanics. We point out some philosophical problems with this classical formulation. We then present the flattening of the Earth from the point of view of Relational Mechanics, which is a mathematical implementation of Mach's principle utilizing Weber's law for gravitation.




Can a Steady Current Generate an Electric Field?

(1991)

Prof. Andre K. T. Assis
Institute of Physics, University of Campinas, Campinas, SP 13083-859, Brazil; assis@ifi.unicamp.br, +55 (19) 35215515, www.ifi.unicamp.br/~assis


Physics Essays, Volume 4, No. 1, pp. 109-114
Keywords: Weber's law, Amp?re's law, radial electric field, tokamak transport, anomalous diffusion in plasmas, ambipolar diffusion, Phipps's potential, the motional electric field of Weber's law is a possible e

Lookup: theory of relativity (11), weber electrodynamics (3), theory (173), relativity (390), mechanics (76), weber (4), electrodynamics (68), mass (94), schr?dinger (4), inertial (35), potential (25), field (99), law (61), electric (45), weber (4), transport (4), potential (25), e (4), anomalous (5), amp?re (3)

Abstract:

We present the results for the electric and magnetic fields due to linear and circular current distributions according to Weber's theory. We show how the electric field predicted by Weber's law is compatible with the anomalous diffusion in plasmas. Finally, we discuss some modem experiments related to this topic and compare the results of these experiments with a prediction based on Weber's law.

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