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Faraday's Experimental Researches in Electricity: Guide to a first reading
In this guidebook to Faraday's Experimental Researches in Electricity, Howard Fisher guides the reader through Faraday's work, displaying Faraday's experimental virtuosity and keen theoretical insight. Fisher has a wonderful way of seeing the philosophical and literary aspects that make Faraday's Researches not cold science but a human work. Fisher's thoughtful selections and clear, helpful explanations of the instrumentation and electromagnetic phenomena make this fascinating text accessible to those who lack time to find their way through the labyrinths of the original.
635 pages, Paperback
First published January 1, 1855
About the author
Michael Faraday
309 books99 followersMichael Faraday, FRS (22 September 1791 – 25 August 1867) was an English scientist who contributed to the fields of electromagnetism and electrochemistry. His main discoveries include those of electromagnetic induction, diamagnetism and electrolysis.
Although Faraday received little formal education, he was one of the most influential scientists in history. It was by his research on the magnetic field around a conductor carrying a direct current that Faraday established the basis for the concept of the electromagnetic field in physics. Faraday also established that magnetism could affect rays of light and that there was an underlying relationship between the two phenomena. He similarly discovered the principle of electromagnetic induction, diamagnetism, and the laws of electrolysis. His inventions of electromagnetic rotary devices formed the foundation of electric motor technology, and it was largely due to his efforts that electricity became practical for use in technology.
As a chemist, Faraday discovered benzene, investigated the clathrate hydrate of chlorine, invented an early form of the Bunsen burner and the system of oxidation numbers, and popularised terminology such as anode, cathode, electrode, and ion. Faraday ultimately became the first and foremost Fullerian Professor of Chemistry at the Royal Institution of Great Britain, a lifetime position.
Faraday was an excellent experimentalist who conveyed his ideas in clear and simple language; his mathematical abilities, however, did not extend as far as trigonometry or any but the simplest algebra. James Clerk Maxwell took the work of Faraday and others, and summarized it in a set of equations that is accepted as the basis of all modern theories of electromagnetic phenomena. On Faraday's uses of the lines of force, Maxwell wrote that they show Faraday "to have been in reality a mathematician of a very high order – one from whom the mathematicians of the future may derive valuable and fertile methods." The SI unit of capacitance, the farad, is named in his honour.
Albert Einstein kept a picture of Faraday on his study wall, alongside pictures of Isaac Newton and James Clerk Maxwell. Physicist Ernest Rutherford stated; "When we consider the magnitude and extent of his discoveries and their influence on the progress of science and of industry, there is no honour too great to pay to the memory of Faraday, one of the greatest scientific discoverers of all time".
Although Faraday received little formal education, he was one of the most influential scientists in history. It was by his research on the magnetic field around a conductor carrying a direct current that Faraday established the basis for the concept of the electromagnetic field in physics. Faraday also established that magnetism could affect rays of light and that there was an underlying relationship between the two phenomena. He similarly discovered the principle of electromagnetic induction, diamagnetism, and the laws of electrolysis. His inventions of electromagnetic rotary devices formed the foundation of electric motor technology, and it was largely due to his efforts that electricity became practical for use in technology.
As a chemist, Faraday discovered benzene, investigated the clathrate hydrate of chlorine, invented an early form of the Bunsen burner and the system of oxidation numbers, and popularised terminology such as anode, cathode, electrode, and ion. Faraday ultimately became the first and foremost Fullerian Professor of Chemistry at the Royal Institution of Great Britain, a lifetime position.
Faraday was an excellent experimentalist who conveyed his ideas in clear and simple language; his mathematical abilities, however, did not extend as far as trigonometry or any but the simplest algebra. James Clerk Maxwell took the work of Faraday and others, and summarized it in a set of equations that is accepted as the basis of all modern theories of electromagnetic phenomena. On Faraday's uses of the lines of force, Maxwell wrote that they show Faraday "to have been in reality a mathematician of a very high order – one from whom the mathematicians of the future may derive valuable and fertile methods." The SI unit of capacitance, the farad, is named in his honour.
Albert Einstein kept a picture of Faraday on his study wall, alongside pictures of Isaac Newton and James Clerk Maxwell. Physicist Ernest Rutherford stated; "When we consider the magnitude and extent of his discoveries and their influence on the progress of science and of industry, there is no honour too great to pay to the memory of Faraday, one of the greatest scientific discoverers of all time".
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July 11, 2023
In the first volume of Robert Caro’s biography of Lyndon Johnson, there is a fantastic chapter about what life in the Texas Hill Country was like before electricity arrived. Every basic task was substantially more difficult: water had to be carried in buckets, clothes had to be washed by hand, water had to be boiled over an open fire, milk and eggs had to be refrigerated in ice cellars, and on and on. When power finally did arrive to this rural area—thanks in large part to Johnson’s work—it transformed daily life in a matter of years. Johnson was considered a hero, and rightly so.
But if Lyndon Johnson deserves ample praise for having helped bring electricity to his district, what does Michael Faraday deserve? For it was Faraday who first discovered the principles of the electric motor and the electric generator. If not for him, the harsh conditions described by Caro—a life of ceaseless toil, barely eking out a living—might be not just confined to a rural area in Texas, but the general condition of our species. Faraday was, in short, a historical figure of supreme importance, and his work represents a turning point in human history.
Knowing this, it is shocking to see just how humble and, in many ways, how simple his work actually was. The tools at his disposal seem, to the modern reader, almost laughably primitive. Whereas modern physicists are using a city’s worth of power to accelerate particles down a track kilometers long, Faraday was fiddling with wires and bar magnets and compasses. And yet, with such simple tools at his disposal, and with scarcely any formal education—indeed, hardly knowing any math beyond basic algebra—Faraday made contributions to physics comparable to Newton or Einstein.
The format of this book is simple. It is not, like the Principia, a unified work conceived as a final theory. Rather, Faraday reached his conclusions slowly, over years of experimental work; and this book is a reflection of his process. Starting in 1821, Faraday began publishing accounts of his experiments in the Philosophical Transactions of the Royal Society. These papers were eventually collected and published in three separate volumes, in 1839, 1844, and 1855, consisting of 29 “series” of experiments in total.
Before I go any further, I should note that I did not make my way through all three of these volumes. Rather, I bought a condensed and annotated version published by Green Lion Press and edited by Howard Fisher. Frankly, I do not have the patience or interest to fight my way through 1,500 of the original, and I doubt many others do either. I also very much appreciated Fisher’s introductory essays, without which I think I would have been quite lost (and I often was, anyway).
Remarkably, Faraday maintains a numbering system for his paragraphs throughout, so that he can refer to earlier paragraphs of previous series as easily as one might cite the Bible. This is a simple device, but it does help to reveal the unity that underpins the apparently disorganized quality of this work, as it shows how Faraday was continually returning to the same questions and refining his answers.
I have already mentioned that Faraday was unversed in mathematics. And this makes him fairly unique in the field of physics, in which equations are sometimes elevated to a level that equates math with reality. However, the more one reads of his work, the more one comes to see that, even if he eschewed quantitative reasoning, Faraday was an extremely precise thinker. Part of this is his use of diagrams, which for Faraday almost take on the role of equations in summarizing complex relationships. He is also very sensitive to language, and is constantly trying to choose words that do not carry any inappropriate theoretical baggage.
Just because this book is written in good old-fashioned English, however, does not make it easy. Often, Faraday is responding to dead controversies and in general is using both language and theories that seem strange to the modern reader. To pick a simple example, static electricity is referred to as “ordinary” electricity, since this was the most commonly encountered electricity in Faraday’s day. What is more, Faraday very often must describe a detailed experimental apparatus or procedure, and I very often found myself totally unable to picture what was going on.
Here is a fairly typical example:
I don’t know about you, but I find this to be extremely exhausting.
Not all of the book was so dense, however. I particularly enjoyed the fifteenth series, which basically consisted of Faraday and his assistants putting their hands in a tank and getting an electric eel to shock them. Science was indeed simpler back then.
But the final impression is of Faraday’s remarkable theoretical vision. Although he is an extremely concrete thinker—couching even his most speculative remarks in terms of experiments—he nevertheless succeeded in probing some highly abstract questions. Beginning with the relationship between electricity and magnetism, he goes on to consider the relationship of force to matter, to light, and even to empty space.
His work is, in short, a model for science, showing how careful observation and the judicious use of imagination can revolutionize our understanding of the natural world. Compared to the baroque mathematical models of string theorists—whose theories have yet to receive any confirmation from experiment—Faraday’s approach is refreshing indeed.
But if Lyndon Johnson deserves ample praise for having helped bring electricity to his district, what does Michael Faraday deserve? For it was Faraday who first discovered the principles of the electric motor and the electric generator. If not for him, the harsh conditions described by Caro—a life of ceaseless toil, barely eking out a living—might be not just confined to a rural area in Texas, but the general condition of our species. Faraday was, in short, a historical figure of supreme importance, and his work represents a turning point in human history.
Knowing this, it is shocking to see just how humble and, in many ways, how simple his work actually was. The tools at his disposal seem, to the modern reader, almost laughably primitive. Whereas modern physicists are using a city’s worth of power to accelerate particles down a track kilometers long, Faraday was fiddling with wires and bar magnets and compasses. And yet, with such simple tools at his disposal, and with scarcely any formal education—indeed, hardly knowing any math beyond basic algebra—Faraday made contributions to physics comparable to Newton or Einstein.
The format of this book is simple. It is not, like the Principia, a unified work conceived as a final theory. Rather, Faraday reached his conclusions slowly, over years of experimental work; and this book is a reflection of his process. Starting in 1821, Faraday began publishing accounts of his experiments in the Philosophical Transactions of the Royal Society. These papers were eventually collected and published in three separate volumes, in 1839, 1844, and 1855, consisting of 29 “series” of experiments in total.
Before I go any further, I should note that I did not make my way through all three of these volumes. Rather, I bought a condensed and annotated version published by Green Lion Press and edited by Howard Fisher. Frankly, I do not have the patience or interest to fight my way through 1,500 of the original, and I doubt many others do either. I also very much appreciated Fisher’s introductory essays, without which I think I would have been quite lost (and I often was, anyway).
Remarkably, Faraday maintains a numbering system for his paragraphs throughout, so that he can refer to earlier paragraphs of previous series as easily as one might cite the Bible. This is a simple device, but it does help to reveal the unity that underpins the apparently disorganized quality of this work, as it shows how Faraday was continually returning to the same questions and refining his answers.
I have already mentioned that Faraday was unversed in mathematics. And this makes him fairly unique in the field of physics, in which equations are sometimes elevated to a level that equates math with reality. However, the more one reads of his work, the more one comes to see that, even if he eschewed quantitative reasoning, Faraday was an extremely precise thinker. Part of this is his use of diagrams, which for Faraday almost take on the role of equations in summarizing complex relationships. He is also very sensitive to language, and is constantly trying to choose words that do not carry any inappropriate theoretical baggage.
Just because this book is written in good old-fashioned English, however, does not make it easy. Often, Faraday is responding to dead controversies and in general is using both language and theories that seem strange to the modern reader. To pick a simple example, static electricity is referred to as “ordinary” electricity, since this was the most commonly encountered electricity in Faraday’s day. What is more, Faraday very often must describe a detailed experimental apparatus or procedure, and I very often found myself totally unable to picture what was going on.
Here is a fairly typical example:
A ray of light issuing from an Argand lamp, was polarized in a horizontal plane by reflexion from a surface of glass, and the polarized ray passed through a Nichol’s eye-piece revolving on a horizontal axis, so as to be easily examined by the latter. Between the polarizing mirror and the eye-piece two powerful electro-magnetic poles were arranged, being either the poles of a horse-shoe magnet, or the contrary poles of two cylinder magnets; they were separated from each other about 2 inches in the direction of the line of the ray, and so placed, that, if on the same side of the polarized ray, it might pass near them; or if on contrary sides, it might go between them, its direction being always parallel, or nearly so, to the magnetic lines of force.
I don’t know about you, but I find this to be extremely exhausting.
Not all of the book was so dense, however. I particularly enjoyed the fifteenth series, which basically consisted of Faraday and his assistants putting their hands in a tank and getting an electric eel to shock them. Science was indeed simpler back then.
But the final impression is of Faraday’s remarkable theoretical vision. Although he is an extremely concrete thinker—couching even his most speculative remarks in terms of experiments—he nevertheless succeeded in probing some highly abstract questions. Beginning with the relationship between electricity and magnetism, he goes on to consider the relationship of force to matter, to light, and even to empty space.
His work is, in short, a model for science, showing how careful observation and the judicious use of imagination can revolutionize our understanding of the natural world. Compared to the baroque mathematical models of string theorists—whose theories have yet to receive any confirmation from experiment—Faraday’s approach is refreshing indeed.
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