John Peter Gassiot FRS (2 April 1797 – 15 August 1877) lso Gassiottwas an English businessman and amateur scientist. He was particularly associated with public demonstrations of

electrical phenomena This is a list of electrical phenomena. Electrical phenomena are a somewhat arbitrary division of electromagnetic phenomena. Some examples are: * Biefeld–Brown effect — Thought by the person who coined the name, Thomas Townsend Brown, to ...

and the development of the

Royal Society The Royal Society, formally The Royal Society of London for Improving Natural Knowledge, is a learned society and the United Kingdom's national academy of sciences. The society fulfils a number of roles: promoting science and its benefits, re ...

Life

Born in London, he joined the

Royal Navy The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against F ...

as a

midshipman A midshipman is an officer of the lowest rank, in the Royal Navy, United States Navy, and many Commonwealth navies. Commonwealth countries which use the rank include Canada (Naval Cadet), Australia, Bangladesh, Namibia, New Zealand, South Afr ...

. In 1819 he married Elizabeth Scott and the couple had nine sons and three daughters.Harrison (2004) In 1822, he joined in business with Spaniard Sebastian Gonzalez Martinez to create the

firm A company, abbreviated as co., is a Legal personality, legal entity representing an association of people, whether Natural person, natural, Legal person, legal or a mixture of both, with a specific objective. Company members share a common p ...

of Martinez Gassiot & Co. selling cigars,

sherry Sherry ( es, jerez ) is a fortified wine made from white grapes that are grown near the city of Jerez de la Frontera in Andalusia, Spain. Sherry is produced in a variety of styles made primarily from the Palomino grape, ranging from light versi ...

and

port A port is a maritime facility comprising one or more wharves or loading areas, where ships load and discharge cargo and passengers. Although usually situated on a sea coast or estuary, ports can also be found far inland, such as Ham ...

. He also became an enthusiastic amateur scientist with a particular interest in electricity. He created an amply-provided laboratory at his home on

Clapham Common Clapham Common is a large triangular urban park in Clapham, south London, England. Originally common land for the parishes of Battersea and Clapham, it was converted to parkland under the terms of the Metropolitan Commons Act 1878. It is of gr ...

and opened it to his fellow scientists, including

James Clerk Maxwell James Clerk Maxwell (13 June 1831 – 5 November 1879) was a Scottish mathematician and scientist responsible for the classical theory of electromagnetic radiation, which was the first theory to describe electricity, magnetism and ligh ...

who performed much of his 1860s work on

electrical resistance The electrical resistance of an object is a measure of its opposition to the flow of electric current. Its reciprocal quantity is , measuring the ease with which an electric current passes. Electrical resistance shares some conceptual parallels ...

there.

Science administrator and populariser

Gassiot was a close associate of

William Sturgeon William Sturgeon (22 May 1783 – 4 December 1850) was an English physicist and inventor who made the first electromagnets, and invented the first practical British electric motor. Early life Sturgeon was born on 22 May 1783 in Whittington, ...

and

Charles Vincent Walker Charles Vincent Walker FRS (20 March 1812 – 24 December 1882) was an English electrical engineer and publisher, a major influence on the development of railway telecommunications, he was also the first person to send a submarine telegraph sign ...

and the three were instrumental in founding the

London Electrical Society The London Electrical Society was established in 1837 to enable amateur electricians to meet and share their interests in “experimental investigation of Electrical Science in all its various branches”. Although it initially flourished the societ ...

in 1837. The society was famous for the public electrical displays mounted by Gassiot. Gassiot was elected

Fellow of the Royal Society Fellowship of the Royal Society (FRS, ForMemRS and HonFRS) is an award granted by the judges of the Royal Society of London to individuals who have made a "substantial contribution to the improvement of natural science, natural knowledge, incl ...

in 1841 and was instrumental in the Society's reform in the 1840s. He was a founder of the

Chemical Society The Chemical Society was a scientific society formed in 1841 (then named the Chemical Society of London) by 77 scientists as a result of increased interest in scientific matters. Chemist Robert Warington was the driving force behind its creation. ...

in 1845, closely associated with the

London Institution The London Institution was an educational institution founded in London in 1806 (not to be confused with the British Institution for Promoting the Fine Arts in the United Kingdom founded the previous year, with which it shared some founders). It ...

, and a

Surrey Surrey () is a ceremonial and non-metropolitan county in South East England, bordering Greater London to the south west. Surrey has a large rural area, and several significant urban areas which form part of the Greater London Built-up Area. ...

magistrate The term magistrate is used in a variety of systems of governments and laws to refer to a civilian officer who administers the law. In ancient Rome, a '' magistratus'' was one of the highest ranking government officers, and possessed both judici ...

Scientist

Gassiot was a close associate of

William Robert Grove Sir William Robert Grove, FRS FRSE (11 July 1811 – 1 August 1896) was a Welsh judge and physical scientist. He anticipated the general theory of the conservation of energy, and was a pioneer of fuel cell technology. He invented the Grove voltai ...

at the Royal Society, encouraging Grove to join the London Institution where the two worked together on the development of photography. Gassiot's work was particularly important in the demise of the contact theory of voltaic electricity. Starting in 1840 he performed a number of experiments culminating in 1844 where he used a

battery Battery most often refers to: * Electric battery, a device that provides electrical power * Battery (crime), a crime involving unlawful physical contact Battery may also refer to: Energy source *Automotive battery, a device to provide power t ...

of 100 mutually insulated

Grove cell The Grove cell was an early electric primary cell named after its inventor, Welsh physical scientist William Robert Grove, and consisted of a zinc anode in dilute sulfuric acid and a platinum cathode in concentrated nitric acid, the two separated ...

s to show that a

spark Spark commonly refers to: * Spark (fire), a small glowing particle or ember * Electric spark, a form of electrical discharge Spark may also refer to: Places * Spark Point, a rocky point in the South Shetland Islands People * Spark (surname) * ...

could be drawn before an electrical contact was made. Gassiot extended Groves's work on

stria Stretch marks, also known as striae () or striae distensae, are a form of scarring on the skin with an off-color hue. Over time they may diminish, but will not disappear completely. Striae are caused by tearing of the dermis during periods of ...

e in

electrical discharge An electric discharge is the release and transmission of electricity in an applied electric field through a medium such as a gas (ie., an outgoing flow of electric current through a non-metal medium).American Geophysical Union, National Research C ...

s, showing that the discharge cannot continue in a

vacuum A vacuum is a space devoid of matter. The word is derived from the Latin adjective ''vacuus'' for "vacant" or "void". An approximation to such vacuum is a region with a gaseous pressure much less than atmospheric pressure. Physicists often dis ...

. In 1858, Gassiot, in his

Bakerian lecture The Bakerian Medal is one of the premier medals of the Royal Society that recognizes exceptional and outstanding science. It comes with a medal award and a prize lecture. The medalist is required to give a lecture on any topic related to physical ...

, reported deflections of electrical discharges in rarefied gases both by

magnetism Magnetism is the class of physical attributes that are mediated by a magnetic field, which refers to the capacity to induce attractive and repulsive phenomena in other entities. Electric currents and the magnetic moments of elementary particles ...

and

electrostatics Electrostatics is a branch of physics that studies electric charges at rest (static electricity). Since classical times, it has been known that some materials, such as amber, attract lightweight particles after rubbing. The Greek word for amber ...

. Though this was an early observation of the phenomenon of

cathode rays Cathode rays or electron beam (e-beam) are streams of electrons observed in discharge tubes. If an evacuated glass tube is equipped with two electrodes and a voltage is applied, glass behind the positive electrode is observed to glow, due to el ...

Julius Plücker Julius Plücker (16 June 1801 – 22 May 1868) was a German mathematician and physicist. He made fundamental contributions to the field of analytical geometry and was a pioneer in the investigations of cathode rays that led eventually to the dis ...

is usually credited with their discovery.

Honours

Royal Medal The Royal Medal, also known as The Queen's Medal and The King's Medal (depending on the gender of the monarch at the time of the award), is a silver-gilt medal, of which three are awarded each year by the Royal Society, two for "the most important ...

of the Royal Society (1863). * Juror's Medal of the London Exhibition of 1862.

Death

Gassiot died at home at

Ryde Ryde is an English seaside town and civil parish on the north-east coast of the Isle of Wight. The built-up area had a population of 23,999 according to the 2011 Census and an estimate of 24,847 in 2019. Its growth as a seaside resort came af ...

, Isle of Wight, but was taken to

West Norwood Cemetery West Norwood Cemetery is a rural cemetery in West Norwood in London, England. It was also known as the South Metropolitan Cemetery. One of the first private landscaped cemeteries in London, it is one of the " Magnificent Seven" cemeteries of L ...

for burial.Gassiot family, various newsletters, Friends of West Norwood Cemetery
/ref> His third son, Charles Gassiot (1826–1902), took over as head of the family wine business, and was an art patron, donating extensively to the

Guildhall Art Gallery The Guildhall Art Gallery houses the art collection of the City of London, England. The museum is located in the Moorgate area of the City of London. It is a stone building in a semi-Gothic style intended to be sympathetic to the historic Guild ...

References

Bibliography

*Obituaries: **''Journal of the Chemical Society'', 33 (1878), 227 **''

Nature Nature, in the broadest sense, is the physics, physical world or universe. "Nature" can refer to the phenomenon, phenomena of the physical world, and also to life in general. The study of nature is a large, if not the only, part of science. ...

'', 16 (1877), 388, 399–400 ---- * *Harrison, W. J. (2004)
Gassiot, John Peter (1797–1877)
, rev. Iwan Rhys Morus, ''

Oxford Dictionary of National Biography The ''Dictionary of National Biography'' (''DNB'') is a standard work of reference on notable figures from British history, published since 1885. The updated ''Oxford Dictionary of National Biography'' (''ODNB'') was published on 23 September ...

'', Oxford University Press. Retrieved 5 August 2007 * * *

External links

Electricity on Show: Spectacular Events in Victorian London
–

Science Museum A science museum is a museum devoted primarily to science. Older science museums tended to concentrate on static displays of objects related to natural history, paleontology, geology, industry and industrial machinery, etc. Modern trends in mu ...

{{DEFAULTSORT:Gassiot, John Peter 1797 births 1877 deaths English scientists Burials at West Norwood Cemetery Fellows of the Royal Society Royal Medal winners Writers from London People from Ryde 19th-century English businesspeople