John Frederic Daniell

Lore & Background

Daniell was born in London. In 1831 he became the first professor of chemistry at the newly founded King's College London, and in 1835 he was appointed to the equivalent post at the East India Company's Military Seminary at Addiscombe, Surrey. His name is best known for his invention of the Daniell cell, an element of an electric battery much better than voltaic cells. He also invented the dew-point hygrometer known by his name, and a register pyrometer. In 1830 he erected in the hall of the Royal Society a water-barometer, with which he carried out a large number of observations. A process devised by him for the manufacture of illuminating gas from turpentine and resin was in use in New York City for a time.

Reader's Guide

Daniell's significance lies primarily in his invention of the Daniell cell, which provided a more stable and reliable source of electric current than earlier voltaic cells, advancing both scientific research and practical applications of electricity. His dew-point hygrometer and register pyrometer contributed to meteorological and temperature measurement. His water-barometer observations at the Royal Society furthered atmospheric science. His publications, including Meteorological Essays (1823) and An Essay on Artificial Climate (1824), addressed horticulture and climate. He was awarded an honorary Doctorate of Civil Law by the University of Oxford in 1842. Daniell died suddenly of apoplexy in London in March 1845 while attending a meeting of the council of the Royal Society, of which he had become a fellow in 1813 and Foreign Secretary in 1839. The lunar crater Daniell is named after him.

Did You Know?

• Daniell invented the Daniell cell, an electric battery much better than voltaic cells.
• He devised a process for manufacturing illuminating gas from turpentine and resin, used in New York City.
• He erected a water-barometer in the hall of the Royal Society in 1830.
• The lunar crater Daniell is named after him.

Academic Career and Institutional Service

John Frederic Daniell, born in London on 12 March 1790, built a distinguished career as an English chemist and physicist that placed him at some of the most prominent institutions of his era. In 1831, he was appointed as the very first professor of chemistry at King's College London, a newly established institution that required foundational academic leadership. Four years later, in 1835, he secured a comparable chair at the East India Company's Military Seminary in Addiscombe, Surrey, extending his teaching influence into military education. His standing in the broader scientific community was cemented through his long association with the Royal Society, where he had been a fellow since 1813 and rose to the position of Foreign Secretary by 1839. In recognition of his scholarly contributions, the University of Oxford conferred upon him an honorary Doctorate of Civil Law in 1842, underscoring the breadth of his intellectual reputation beyond pure chemistry into the wider world of natural philosophy.

Inventions and Practical Scientific Contributions

Among Daniell's most enduring contributions to science and industry was his invention of the Daniell cell, a component of electric batteries that represented a significant improvement over the earlier voltaic cells. Beyond electrochemistry, he devised the dew-point hygrometer and a register pyrometer, both instruments that bear his name and remain references in their respective fields. In 1830, he installed a water-barometer in the hall of the Royal Society, using it to conduct a large body of meteorological observations that fed into his broader research. His practical ingenuity also extended into industrial chemistry: he developed a process for producing illuminating gas from turpentine and resin, a method that found commercial application in New York City for a period. These diverse inventions spanned multiple disciplines—electrical engineering, meteorology, thermometry, and industrial chemistry—demonstrating a scientist whose curiosity and skill reached well beyond a single specialty.

Writings and Public Lectures

Daniell was a prolific writer who addressed both specialized scientific audiences and the general public. His early work, Meteorological Essays, published in 1823, reflected his deep engagement with atmospheric science. The following year he released an Essay on Artificial Climate considered in its Applications to Horticulture, in which he argued for the necessity of maintaining a humid atmosphere in hothouses dedicated to tropical plants—a practical insight that would have been valuable to botanists and gardeners of the period. In 1839, he produced an Introduction to the Study of Chemical Philosophy, a text that likely served as a pedagogical tool for students entering the field. His public speaking reached a wider audience in 1840, when he was invited to deliver the prestigious Royal Institution Christmas Lecture, choosing the topic of The First Principles of Franklinic Electricity. This lecture, delivered to a broad and curious public, showcased his ability to communicate complex electrical concepts in an accessible manner, bridging the gap between laboratory research and popular understanding.

Death and Lasting Commemoration

Daniell's life was cut short in a dramatic and tragic manner. On 13 March 1845, just one day after his fifty-fifth birthday, he died suddenly of apoplexy in London. The circumstances were particularly poignant: he had been attending a meeting of the council of the Royal Society, the very institution with which he had been a fellow since 1813 and where he had served as Foreign Secretary since 1839. His death thus occurred in the midst of active professional engagement, robbing the scientific community of a man still in his intellectual prime. Despite the brevity of his life—spanning only fifty-five years—Daniell's legacy endures in multiple forms. The Daniell cell continues to be referenced in the history of electrochemistry, and his instruments remain touchstones in their fields. Most strikingly, a lunar crater bears his name, ensuring that his memory extends beyond Earth and into the broader cosmos, a fitting tribute to a scientist whose work touched so many domains of natural inquiry.

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