Heaviside was born in
Camden Town, London, at 55 Kings Street
:13 (now Plender Street). He was a short and red-headed child, and suffered from
scarlet fever when young, which left him with a hearing impairment. A small legacy enabled the family to move to a better part of Camden when he was thirteen and he was sent to Camden House Grammar School. He was a good student, placed fifth out of five hundred students in 1865, but his parents could not keep him at school after he was 16, so he continued studying for a year by himself and had no further formal education.
Heaviside's uncle by marriage was Sir
Charles Wheatstone (1802–1875), an internationally celebrated expert in telegraphy and electromagnetism, and the original co-inventor of the first commercially successful telegraph in the mid-1830s. Wheatstone took a strong interest in his nephew's education
 and in 1867 sent him north to work with his own, older brother Arthur, who was managing one of Wheatstone's telegraph companies in
Two years later he took a job as a telegraph operator with the Danish
Great Northern Telegraph Company laying a cable from Newcastle to
Denmark using British contractors. He soon became an electrician. Heaviside continued to study while working, and by the age of 22 he published an article in the prestigious
Philosophical Magazine on 'The Best Arrangement of Wheatstone's Bridge for measuring a Given Resistance with a Given Galvanometer and Battery' which received positive comments from physicists who had unsuccessfully tried to solve this algebraic problem, including
Sir William Thomson, to whom he gave a copy of the paper, and
James Clerk Maxwell. When he published an article on the
duplex method of using a telegraph cable, he poked fun at R. S. Culley, the engineer in chief of the
Post Office telegraph system, who had been dismissing duplex as impractical. Later in 1873 his application to join the
Society of Telegraph Engineers was turned down with the comment that "they didn't want telegraph clerks". This riled Heaviside, who asked Thomson to sponsor him, and along with support of the society's president he was admitted "despite the P.O. snobs".
In 1873 Heaviside had encountered Maxwell's newly published, and later famous, two-volume
Treatise on Electricity and Magnetism. In his old age Heaviside recalled:
I remember my first look at the great treatise of Maxwell's when I was a young man… I saw that it was great, greater and greatest, with prodigious possibilities in its power… I was determined to master the book and set to work. I was very ignorant. I had no knowledge of mathematical analysis (having learned only school algebra and trigonometry which I had largely forgotten) and thus my work was laid out for me. It took me several years before I could understand as much as I possibly could. Then I set Maxwell aside and followed my own course. And I progressed much more quickly… It will be understood that I preach the gospel according to my interpretation of Maxwell.
Undertaking research from home, he helped develop
transmission line theory (also known as the "
telegrapher's equations"). Heaviside showed
mathematically that uniformly distributed
inductance in a telegraph line would diminish both
distortion, and that, if the inductance were great enough and the
resistance not too high, the
circuit would be distortionless while
currents of all
frequencies would have equal speeds of propagation.
 Heaviside's equations helped further the implementation of the telegraph.
From 1882 to 1902, except for three years, he contributed regular articles to the trade paper
The Electrician, which wished to improve its standing, for which he was paid £40 per year. This was hardly enough to live on, but his demands were very small and he was doing what he most wanted to. Between 1883 and 1887 these averaged 2–3 articles per month and these articles later formed the bulk of his Electromagnetic Theory and Electrical Papers.
In 1880, Heaviside researched the
skin effect in telegraph transmission lines. That same year he patented, in England, the
coaxial cable. In 1884 he recast Maxwell's mathematical analysis from its original cumbersome form (they had already been recast as
quaternions) to its modern
vector terminology, thereby reducing twelve of the original twenty equations in twenty unknowns down to the four
differential equations in two unknowns we now know as
Maxwell's equations. The four re-formulated Maxwell's equations describe the nature of electric charges (both static and moving), magnetic fields, and the relationship between the two, namely electromagnetic fields.
Between 1880 and 1887, Heaviside developed the
operational calculus using p for the
differential operator, (which Boole
 had previously denoted by D), giving a method of solving differential equations by direct solution as
algebraic equations. This later caused a great deal of controversy, owing to its lack of
rigour. He famously said, "Mathematics is an experimental science, and definitions do not come first, but later on."
 On another occasion he asked somewhat more defensively, "Shall I refuse my dinner because I do not fully understand the process of digestion?"
In 1887, Heaviside worked with his brother Arthur on a paper entitled "The Bridge System of Telephony". However the paper was blocked by Arthur's superior,
William Henry Preece of the
Post Office, because part of the proposal was that
loading coils (
inductors) should be added to telephone and telegraph lines to increase their self-induction and correct the distortion which they suffered. Preece had recently declared self-inductance to be the great enemy of clear transmission. Heaviside was also convinced that Preece was behind the sacking of the editor of The Electrician which brought his long-running series of articles to a halt (until 1891).
 There was a long history of animosity between Preece and Heaviside. Heaviside considered Preece to be mathematically incompetent, an assessment supported by the biographer
Paul J. Nahin: "Preece was a powerful government official, enormously ambitious, and in some remarkable ways, an utter blockhead." Preece's motivations in suppressing Heaviside's work were more to do with protecting Preece's own reputation and avoiding having to admit error than any perceived faults in Heaviside's work.
: xi–xvii, 162–183
The importance of Heaviside's work remained undiscovered for some time after publication in The Electrician, and so its rights lay in the public domain. In 1897,
AT&T employed one of its own scientists,
George A. Campbell, and an external investigator
Michael I. Pupin to find some respect in which Heaviside's work was incomplete or incorrect. Campbell and Pupin extended Heaviside's work, and AT&T filed for patents covering not only their research, but also the technical method of constructing the coils previously invented by Heaviside. AT&T later offered Heaviside money in exchange for his rights; it is possible that the Bell engineers' respect for Heaviside influenced this offer. However, Heaviside refused the offer, declining to accept any money unless the company were to give him full recognition. Heaviside was chronically poor, making his refusal of the offer even more striking.
But this setback had the effect of turning Heaviside's attention towards electromagnetic radiation, and in two papers of 1888 and 1889, he calculated the deformations of electric and magnetic fields surrounding a moving charge, as well as the effects of it entering a denser medium. This included a prediction of what is now known as
Cherenkov radiation, and inspired his friend
George FitzGerald to suggest what now is known as the
In 1889, Heaviside first published a correct derivation of the magnetic force on a moving charged particle,
 which is now called the
In the late 1880s and early 1890s, Heaviside worked on the
electromagnetic mass. Heaviside treated this as material
mass, capable of producing the same effects.
Wilhelm Wien later verified Heaviside's expression (for low
In 1891 the British
Royal Society recognized Heaviside's contributions to the mathematical description of electromagnetic phenomena by naming him a
Fellow of the Royal Society, and the following year devoting more than fifty pages of the Philosophical Transactions of the Society to his vector methods and electromagnetic theory. In 1905 Heaviside was given an honorary doctorate by the
University of Göttingen.
Later years and views
In 1896, FitzGerald and
John Perry obtained a civil list pension of £120 per year for Heaviside, who was now living in Devon, and persuaded him to accept it, after he had rejected other charitable offers from the Royal Society.
In 1902, Heaviside proposed the existence of what is now known as the
Kennelly–Heaviside layer of the
ionosphere. Heaviside's proposal included means by which radio signals are transmitted around the Earth's curvature. The existence of the ionosphere was confirmed in 1923. The predictions by Heaviside, combined with
Planck's radiation theory, probably discouraged further attempts to detect radio waves from the
Sun and other
astronomical objects. For whatever reason, there seem to have been no attempts for 30 years, until
Jansky's development of
radio astronomy in 1932.
In later years his behavior became quite
eccentric. According to associate B. A. Behrend, he became a recluse who was so averse to meeting people that he delivered the manuscripts of his Electrician papers to a grocery store, where the editors picked them up.
 Though he had been an active cyclist in his youth, his health seriously declined in his sixth decade. During this time Heaviside would sign letters with the initials "W.O.R.M." after his name. Heaviside also reportedly started painting his fingernails pink and had granite blocks moved into his house for furniture.
: xx In 1922, he became the first recipient of the
Faraday Medal, which was established that year.
On Heaviside's religious views, he was a
Unitarian, but not a religious one. He was even said to have made fun of people who put their faith in a supreme being.
Comparison of before and after the restoration project.
Heaviside died on 3 February 1925, at
Devon by falling from a ladder,
 and is buried near the eastern corner of
Paignton cemetery. He is buried with his father, Thomas Heaviside (1813–1896) and his mother, Rachel Elizabeth Heaviside. The gravestone was cleaned thanks to an anonymous donor sometime in 2005.
 Most of his recognition was gained posthumously.
Heaviside Memorial Project
In July 2014, academics at
Newcastle University, UK and the Newcastle Electromagnetics Interest Group founded the Heaviside Memorial Project
 in a bid to fully restore the monument through public subscription.
 The restored memorial was ceremonially unveiled on 30 August 2014 by Alan Heather, a distant relative of Heaviside. The unveiling was attended by the Mayor of Torbay, the
MP for Torbay, an ex-curator of the Science Museum (representing the
Institution of Engineering and Technology), the Chairman of the Torbay Civic Society, and delegates from Newcastle University.
The Heaviside Collection 1872–1923
A collection of Heaviside's notebooks, papers, correspondence, notes and annotated pamphlets on telegraphy is held at the
Institution of Engineering and Technology (IET) Archive Centre.