---
title: "Robert Boyle"
chunk: 1/4
source: "https://en.wikipedia.org/wiki/Robert_Boyle"
category: "reference"
tags: "science, encyclopedia"
date_saved: "2026-05-05T04:05:54.217837+00:00"
instance: "kb-cron"
---

Robert Boyle (; 25 January 1627 – 31 December 1691) was an Anglo-Irish natural philosopher, chemist, physicist, alchemist and inventor. Boyle is largely regarded today as the first modern chemist, and therefore one of the founders of modern chemistry, and one of the pioneers of modern experimental scientific method. 
He is best known for Boyle's law, which describes the inversely proportional relationship between the absolute pressure and volume of a gas, if the temperature is kept constant within a closed system. 
Among his works, The Sceptical Chymist is seen as a cornerstone book in the field of chemistry. He was a devout and pious Anglican and is noted for his works in theology.

== Biography ==

=== Early years ===

Boyle was born at Lismore Castle in County Waterford, in the far south of Ireland, the seventh son and fourteenth child of the 1st Earl of Cork ("the Great Earl of Cork") and Catherine Fenton. Lord Cork, then known simply as Richard Boyle, had arrived in Dublin from England in 1588 during the Tudor plantations of Ireland and obtained an appointment as a deputy escheator. He had amassed enormous wealth and landholdings by the time Robert was born and had been made Earl of Cork in October 1620. Catherine, his wife, was the daughter of Sir Geoffrey Fenton, the former Secretary of State for Ireland, who was born in Dublin in 1539, and Alice Weston, the daughter of Robert Weston, who was born in Lismore in 1541.
As a child, Boyle was raised by a wet nurse, as were his elder brothers. Boyle received private tutoring in Latin, Greek, and French and when he was eight years old, following the death of his mother, he, and his brother Francis, were sent to Eton College in England. His father's friend, Sir Henry Wotton, was then the provost of the college.
During this time, his father hired a private tutor, Robert Carew, who had knowledge of Irish, to act as a private tutor to his sons in Eton. However, "only Mr. Robert sometimes desires it [Irish] and is a little entered in it", but despite the "many reasons" given by Carew to draw their attention to it, "they practise the French and Latin but they affect not the Irish". After spending over three years at Eton, Robert travelled abroad with a French tutor. They visited Italy in 1641 and remained in Florence during the winter of that year studying the "paradoxes of the great star-gazer", the elderly Galileo Galilei.

=== Middle years ===

Robert returned to England from continental Europe in mid-1644 with a keen interest in scientific research. His father, Lord Cork, had died the previous year and had left him the manor of Stalbridge in Dorset as well as substantial estates in County Limerick in Ireland that he had acquired. Robert then made his residence at Stalbridge House, between 1644 and 1652, and settled in a laboratory where he conducted many experiments. From that time, Robert devoted his life to scientific research and soon took a prominent place in the band of enquirers, known as the "Invisible College", who devoted themselves to the cultivation of the "new philosophy". They met frequently in London, often at Gresham College, and some of the members also had meetings at Oxford.
Having made several visits to his Irish estates beginning in 1647, Robert moved to Ireland in 1652 but became frustrated at his inability to make progress in his chemical work. In one letter, he described Ireland as "a barbarous country where chemical spirits were so misunderstood and chemical instruments so unprocurable that it was hard to have any Hermetic thoughts in it."

All Souls, Oxford University, shows the arms of Boyle's family in the colonnade of the Great Quadrangle, opposite the arms of the Hill family of Shropshire, close by a sundial designed by Boyle's friend Christopher Wren.
In 1654, Boyle left Ireland for Oxford to pursue his work more successfully. An inscription can be found on the wall of University College, Oxford, the High Street at Oxford (now the location of the Shelley Memorial), marking the spot where Cross Hall stood until the early 19th century. It was here that Boyle rented rooms from the wealthy apothecary who owned the Hall.
Reading in 1657 of Otto von Guericke's vacuum pump, he set himself, with the assistance of Robert Hooke, to devise improvements in its construction. His "machina Boyleana" or "Pneumatical Engine" was finished in 1659.
Among the critics of the views put forward in this book was a Jesuit, Francis Line (1595–1675), and it was while answering his objections that Boyle made his first mention of the law that the volume of a gas varies inversely to the pressure of the gas, which among English-speaking people is usually called Boyle's law, after his name. The person who originally formulated the hypothesis was Henry Power in 1661. Boyle in 1662 included a reference to a paper written by Power, but mistakenly attributed it to Richard Towneley. In continental Europe, the hypothesis is sometimes attributed to Edme Mariotte, although he did not publish it until 1676 and was probably aware of Boyle's work at the time.

In 1663 the Invisible College became The Royal Society of London for Improving Natural Knowledge, and the charter of incorporation granted by Charles II of England named Boyle a member of the council. In 1680 he was elected president of the society but declined the honour from a scruple about oaths.
He made a "wish list" of 24 possible inventions which included "the prolongation of life", the "art of flying", "perpetual light", "making armour light and extremely hard", "a ship to sail with all winds, and a ship not to be sunk", "practicable and certain way of finding longitudes", "potent drugs to alter or exalt imagination, waking, memory and other functions and appease pain, procure innocent sleep, harmless dreams, etc.". All but a few of the 24 have come true.