Michael Faraday and the Discovery of Electromagnetism: The Man Who Lit Up the World

“Nothing is too wonderful to be true.”

Introduction: The Delivery Boy Who Became a Genius

In 1831, in a London laboratory, a modest, self-taught man conducted an experiment that would change the world forever. Michael Faraday, a former newspaper delivery boy turned one of history’s greatest scientists, discovered the principle of electromagnetic induction - the key that allowed mechanical energy to be transformed into electricity, and vice versa.

Without Faraday, there would be no electric motors, no generators, no light bulbs, no power grid - in short, no modern world as we know it. Yet this pious and humble man, who refused titles and honors, remains relatively unknown to the general public.

Historical Context: Electricity at the Dawn of the 19th Century

Early Discoveries

At the beginning of the 19th century, electricity was still a mystery:

1600: William Gilbert discovered that the Earth behaved like a magnet (terrestrial magnetism)
1752: Benjamin Franklin proved that lightning was electrical (kite experiment)
1785: Charles-Augustin de Coulomb formulated the law of electrical attraction
1800: Alessandro Volta invented the electric battery, the first continuous source of current

However, these discoveries remained theoretical or limited. No one yet knew how to produce electricity in large quantities, nor how to use it to power machines.

The Royal Institution of London

It was in this context that the Royal Institution of Great Britain was founded in 1799 in London. Its purpose: to disseminate scientific knowledge to the general public through lectures.

In 1813, Humphry Davy, a celebrated chemist and director of the Royal Institution, hired a young man of 22 years as a laboratory assistant: Michael Faraday.

Faraday, without formal education, had learned everything by reading books and conducting experiments at home. His curiosity and intelligence impressed Davy.

The Age of Industrialization

England was then in the midst of the Industrial Revolution:

Watt’s steam engines were operating at full capacity
Textile factories were multiplying
Railways were beginning to develop

But one revolutionary power source was still missing: electricity. And it was Faraday who would tame it.

Michael Faraday: From Apprentice to Scientist

A Modest Childhood

Michael Faraday was born on September 22, 1791 in a poor neighborhood of London, Newington Butts. His family was not well-off: his father was a blacksmith, and Michael had to leave school at 13 years old to work as a newspaper delivery boy and bookbinder’s apprentice.

However, he was passionate about reading:

He read every book he could find, especially on sciences
He conducted simple experiments at home with rudimentary batteries
He attended public lectures at the Royal Institution

Meeting Davy

In 1812, Faraday attended a lecture by Humphry Davy at the Royal Institution. Fascinated, he took detailed notes, bound them into a book, and sent it to Davy with a job application letter.

Davy, impressed by his initiative, hired him as a laboratory assistant in 1813. Faraday then became Davy’s assistant, secretary, valise packer, and even valet during his travels in Europe.

The Self-Taught Scientist

Faraday taught himself everything:

Chemistry (he discovered benzene and studied chlorine)
Electricity (he conducted experiments with batteries)
Magnetism (he studied magnets)

In 1820, Oersted discovered that electricity creates a magnetic field. Faraday, inspired, asked himself: “What if magnetism could create electricity?”

This was the beginning of a 10-year quest.

Faraday’s Great Discoveries

Electromagnetic Induction (1831)

On August 29, 1831, Faraday conducted a historic experiment:

He wound two coils of wire around an iron core (a toroidal ring)
He connected one coil to a battery (to create a magnetic field)
He connected the other coil to a galvanometer (a device measuring electric current)

When he closed the circuit of the first coil, he observed a momentary deflection of the galvanometer in the second. And when he opened the circuit, he observed a deflection in the other direction.

Faraday had just discovered electromagnetic induction: a varying magnetic field can produce an electric current.

This was the key to mass electricity production!

Faraday’s Disc (1831)

A few weeks later, Faraday invented the first electric generator:

A copper disc rotated between the poles of a horseshoe magnet
Brushes rubbing on the disc allowed collection of the current produced

This was the first device to convert mechanical energy into electricity - the principle of all modern power plants.

The Electric Motor (1832)

Faraday also invented the first electric motor:

A conductive wire dipped into a mercury bath (to ensure electrical contact)
A permanent magnet was placed in the center
When current passed through the wire, it rotated around the magnet (Laplace force)

This was a demonstration that electricity could produce mechanical motion - the principle of all modern motors.

The Laws of Electrolysis (1833-1834)

Faraday also studied electrolysis (decomposition of substances by electricity) and discovered:

The amount of substance released is proportional to the amount of electricity passing through the electrolyte
The amount of substance is proportional to its chemical equivalent weight

These fundamental laws of electrochemistry are still used today.

The Concept of Electromagnetic Field

Faraday also introduced the idea of electromagnetic field:

He imagined that electric and magnetic forces extended through space in the form of lines of force
This idea was later mathematized by James Clerk Maxwell (Maxwell’s equations, 1864)
It led to the theory of electromagnetism and the understanding that light is an electromagnetic wave

The Impact of Faraday’s Discoveries

The Electrical Revolution

Faraday’s discoveries enabled the development of the electrical industry:

Electric generators (1870s): Based on induction, they allowed mass production of electricity
Electric motors (1880s): Based on his principles, they gradually replaced steam engines
Power grids: Enabled distribution of electricity in cities and factories
Electric lighting: Thomas Edison (1879) and Joseph Swan (1878) invented the light bulb thanks to Faraday’s principles

Practical Applications

Thanks to Faraday, new technologies became possible:

Electric telegraph (Morse, 1844) - Used electricity to transmit messages
Telephone (Bell, 1876) - Converted sounds into electrical signals
Radio (Marconi, 1895) - Used electromagnetic waves
Electric car - The first electric vehicles appeared in the late 19th century

The Modern Era

Without Faraday, the world would be radically different:

No power grid: No electricity in homes
No electrical appliances: No refrigerator, television, computer…
No modern communications: No telephone, radio, internet
No modern industry: No electric machines in factories

Faraday is literally the man who “lit up” the modern world.

Faraday, the Man and the Scientist

A Pious and Modest Man

Faraday was a devout Christian. He believed that science was a way to understand God’s work:

“The book of nature is written by the finger of God.”

He refused to work on military projects, such as the manufacturing of chemical weapons for the British government.

He also refused honors:

He refused to be knighted
He refused to become president of the Royal Society
He lived modestly all his life

A Passionate Educator

Faraday was also an excellent teacher:

He gave hundreds of public lectures at the Royal Institution
He invented the “Christmas Lecture” (Christmas lectures for children), a tradition that continues today
He wrote accessible articles for the general public

His goal was to make science understandable to all.

His Personal Life

1821: He married Sarah Barnard, a woman from a wealthier family than his own
They had one daughter, but no other children
1867: His wife died
1867: Faraday himself died on August 25 at Hampton Court

Faraday’s Legacy

An Immense Scientific Legacy

Faraday is considered one of the greatest scientists in history:

Father of electromagnetism: His discoveries are the basis of all modern electrical technology
Inventor of the generator and motor: Without him, no industrial electricity
Precursor to Maxwell: His ideas on fields inspired the theory of electromagnetism
Pioneer of electrochemistry: His laws are still fundamental today

Numerous Tributes

Faraday received many tributes:

Electric unit: The farad (F), unit of electric capacitance, bears his name
Statues: In London, near the Royal Institution
Currency: His portrait appeared on British banknotes
Postage stamps: Several countries have issued stamps in his honor
Lunar crater: A crater bears his name
Faraday Institute: Several scientific institutions bear his name

His Influence on Later Scientists

Faraday inspired generations of scientists:

James Clerk Maxwell: Mathematicized his ideas on electromagnetic fields
Heinrich Hertz: Discovered radio waves, confirming Faraday’s theories
Nikola Tesla: Developed alternating current motors based on his principles
Thomas Edison: Used his discoveries to invent the light bulb and phonograph

The Royal Institution Today

The Royal Institution, where Faraday made most of his discoveries, still exists today:

It still organizes public lectures on science
It perpetuates the tradition of Christmas Lectures started by Faraday
It houses a museum with objects that belonged to Faraday
It continues to promote science to the general public

Historical Debate: Why Is Faraday Less Known Than Edison?

Faraday, the Pure Scientist

Why is Faraday less famous?

Scientist, not inventor: Faraday made fundamental discoveries, but did not commercialize his inventions
Modest man: He refused honors and publicity
Theoretical work: His discoveries were abstract and difficult for the general public to understand
Died before the electrical era: Faraday died in 1867, before his inventions were widely adopted

Edison, the Entrepreneur

Why is Edison more famous?

Practical inventor: Edison patented over 1,000 inventions
Businessman: He founded companies and marketed his inventions
Showman: He knew how to sell himself and get people talking about him
Visible inventions: The electric light bulb and phonograph were concrete objects

The Consensus

Most historians recognize that Faraday was the true scientific genius, while Edison was the commercial genius. As Edison himself said:

“Faraday was the greatest discoverer who ever lived. I am simply an applicator.”

Without Faraday, Edison would have had nothing to apply.

Conclusion: The Father of the Electrical Age

Michael Faraday (1791-1867) remains one of the most important and underrated scientists in history. His discoveries on electromagnetism laid the foundations of the electrical age and enabled the development of all modern technology.

Without Faraday, we would still live in a world without electricity, without motors, without electric lights, without telecommunications - a much darker world, both literally and figuratively.

As Ernest Rutherford (Nobel Prize in Physics) wrote:

“Faraday is the greatest scientific discoverer of all time. His discoveries have changed the course of human civilization.”

And as Faraday himself said: