James Maxwell

He married Katherine Mary Dewar in 1858. His wife, the daughter of a college principal, helped him in his experiments. The couple had no children, and was very devoted towards each other.

He became ill with abdominal cancer and died on 5 November 1879 at the age of 48. Years ago, his mother had died of the same disease at the same age.

A mountain range on Venus, Maxwell Montes, is named in his honor as is the Maxwell Gap in the Rings of Saturn.

James Clerk Maxwell was born on 13 June 1831, in Edinburgh, to John Clerk and Frances Cay. His father was a lawyer and his family was quite well off. His parents had met and married when they were well into their thirties and had lost a baby girl in infancy. He was born when his mother was 40 years old.

He was very intelligent and curious as a little boy and his mother encouraged the boy in his quest for knowledge. But his mother unfortunately died of cancer when the boy was just eight.

His father and an aunt became responsible for little James’ upbringing. He received his early education from a tutor. However, the tutor was not much helpful and his father sent the boy to the Edinburgh Academy.

He met Lewis Campbell and Peter Guthrie Tait at the academy; these boys would become notable scholars in future and the three remained friends for life.

He wrote his first scientific paper when he was 14. This work, ‘Oval Curves’ was presented to the Royal Society of Edinburgh by a professor as Maxwell himself was too young to present that.

He accepted a position as professor of physics at Marischal College, Aberdeen, in 1856. He was just 25 years old at that time! A few years later he became the professor of natural philosophy at King’s College London.

Over the next few years he experimented on color photography and developed his ideas on the viscosity of gases and proposed what came to be known as dimensional analysis.

During the late 1850s and 1860s, he made many noteworthy discoveries in the electric and magnetic fields. His paper ‘On Physical Lines of Force’ was published in 1861.

He resigned from King’s College in 1865. He published the paper ‘On Reciprocal figures, frames, and diagrams of forces’ in 1870, and the textbook ‘Theory of Heat’ in 1871.

In 1871, he became the professor of Experimental Physics at Cambridge and directed the newly created Cavendish Laboratory where the next generation physicists carried forward his work over the next several decades.

Maxwell gave the classical theory of electromagnetic radiation, which unified electricity, magnetism, and light as manifestations of the same phenomenon. His equations for electromagnetism are considered the "second great unification in physics" after the first one realised by Isaac Newton. The unification of light and electrical phenomena led to the prediction of the existence of radio waves.

The development of the Maxwell–Boltzmann distribution is one of his biggest contributions to physics. This distribution described particle speeds in idealized gases where the particles move freely and have brief collisions with each other.