William Henry Preece
Encyclopedia
Sir William Henry Preece (15 February 1834 – 6 November 1913) was a Welsh
electrical engineer and inventor. Preece relied on experiment
s and physical reasoning in his life's work. Upon his retirement from the Post Office
in 1899, Preece was made a Knight Commander of the Order of the Bath (KCB).
(Gwynedd
), Wales
, Great Britain
. He was educated at King's College School
and King's College London
. Preece studied at the Royal Institution in London
(Great Britain
) under Michael Faraday
. He later was the consulting engineer for the Post Office (1870s). He became Engineer-in-Chief of the British General Post Office in 1892. He developed several improvements in railroad signaling system that increased railway safety. Preece and Oliver Lodge maintained a correspondence during this period. Upon Lodge's proposal of "loading coil
s" applied to submerged cables, Preece did not realise that "Earthing
" would extend the distance and efficiency.
in the Lake District
in Cumberland
and succeeded in transmitting and receiving Morse radio signals over a distance of about 1 mile (1.6 km) across water.
Preece also developed a wireless telegraphy and telephony
system in 1892. Preece developed a telephone system and implemented it in England. A similar telephone system was patented in the United States by Alexander Graham Bell in 1876. In 1885, Preece and Arthur West Heaviside (Oliver Heaviside
's brother) experimented with parallel telegraph lines and an unwired telephone receiver, discovering radio induction (later identified with the effects of crosstalk).
in the wireless field. Preece gained financial assistance from the Post Office to help expand Marconi's work. Preece believed that the Earth’s magnetic field
was critical in the propagation of radio waves over long distances.
He had a long-standing rivalry with Oliver Heaviside over his traditional ideas about electricity. It was derisively referred to as "the drain-pipe theory" by Heaviside, because Preece presented the analogy
of electricity and water for thought experiment
s. Reportedly, he never understood James Clerk Maxwell
's advances to "mathematical scientific theory
" .
Preece once stated, conveying sentiments which were later made by Edwin Armstrong
,
Preece served as president of the Institution of Civil Engineers
between April 1898 and November 1899.
Welsh people
The Welsh people are an ethnic group and nation associated with Wales and the Welsh language.John Davies argues that the origin of the "Welsh nation" can be traced to the late 4th and early 5th centuries, following the Roman departure from Britain, although Brythonic Celtic languages seem to have...
electrical engineer and inventor. Preece relied on experiment
Experiment
An experiment is a methodical procedure carried out with the goal of verifying, falsifying, or establishing the validity of a hypothesis. Experiments vary greatly in their goal and scale, but always rely on repeatable procedure and logical analysis of the results...
s and physical reasoning in his life's work. Upon his retirement from the Post Office
General Post Office
General Post Office is the name of the British postal system from 1660 until 1969.General Post Office may also refer to:* General Post Office, Perth* General Post Office, Sydney* General Post Office, Melbourne* General Post Office, Brisbane...
in 1899, Preece was made a Knight Commander of the Order of the Bath (KCB).
Biography
Preece was born in CaernarfonCaernarfon
Caernarfon is a Royal town, community and port in Gwynedd, Wales, with a population of 9,611. It lies along the A487 road, on the east banks of the Menai Straits, opposite the Isle of Anglesey. The city of Bangor is to the northeast, while Snowdonia fringes Caernarfon to the east and southeast...
(Gwynedd
Gwynedd
Gwynedd is a county in north-west Wales, named after the old Kingdom of Gwynedd. Although the second biggest in terms of geographical area, it is also one of the most sparsely populated...
), Wales
Wales
Wales is a country that is part of the United Kingdom and the island of Great Britain, bordered by England to its east and the Atlantic Ocean and Irish Sea to its west. It has a population of three million, and a total area of 20,779 km²...
, Great Britain
Great Britain
Great Britain or Britain is an island situated to the northwest of Continental Europe. It is the ninth largest island in the world, and the largest European island, as well as the largest of the British Isles...
. He was educated at King's College School
King's College School
King's College School, commonly referred to as KCS, King's, or KCS Wimbledon, is an independent school for day pupils in Wimbledon in south-west London. The school was founded as the junior department of King's College London and occupied part of its premises in Strand, before relocating to...
and King's College London
King's College London
King's College London is a public research university located in London, United Kingdom and a constituent college of the federal University of London. King's has a claim to being the third oldest university in England, having been founded by King George IV and the Duke of Wellington in 1829, and...
. Preece studied at the Royal Institution in London
London
London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...
(Great Britain
Great Britain
Great Britain or Britain is an island situated to the northwest of Continental Europe. It is the ninth largest island in the world, and the largest European island, as well as the largest of the British Isles...
) under Michael Faraday
Michael Faraday
Michael Faraday, FRS was an English chemist and physicist who contributed to the fields of electromagnetism and electrochemistry....
. He later was the consulting engineer for the Post Office (1870s). He became Engineer-in-Chief of the British General Post Office in 1892. He developed several improvements in railroad signaling system that increased railway safety. Preece and Oliver Lodge maintained a correspondence during this period. Upon Lodge's proposal of "loading coil
Loading coil
In electronics, a loading coil or load coil is a coil that does not provide coupling to any other circuit, but is inserted in a circuit to increase its inductance. The need was discovered by Oliver Heaviside in studying the disappointing slow speed of the Transatlantic telegraph cable...
s" applied to submerged cables, Preece did not realise that "Earthing
Ground (electricity)
In electrical engineering, ground or earth may be the reference point in an electrical circuit from which other voltages are measured, or a common return path for electric current, or a direct physical connection to the Earth....
" would extend the distance and efficiency.
Telegraphy
In 1889 Preece assembled a group of men at Coniston WaterConiston Water
Coniston Water in Cumbria, England is the third largest lake in the English Lake District. It is five miles long, half a mile wide, has a maximum depth of 184 feet , and covers an area of . The lake has an elevation of 143 feet above sea level...
in the Lake District
Lake District
The Lake District, also commonly known as The Lakes or Lakeland, is a mountainous region in North West England. A popular holiday destination, it is famous not only for its lakes and its mountains but also for its associations with the early 19th century poetry and writings of William Wordsworth...
in Cumberland
Cumberland
Cumberland is a historic county of North West England, on the border with Scotland, from the 12th century until 1974. It formed an administrative county from 1889 to 1974 and now forms part of Cumbria....
and succeeded in transmitting and receiving Morse radio signals over a distance of about 1 mile (1.6 km) across water.
Preece also developed a wireless telegraphy and telephony
Wireless telegraphy
Wireless telegraphy is a historical term used today to apply to early radio telegraph communications techniques and practices, particularly those used during the first three decades of radio before the term radio came into use....
system in 1892. Preece developed a telephone system and implemented it in England. A similar telephone system was patented in the United States by Alexander Graham Bell in 1876. In 1885, Preece and Arthur West Heaviside (Oliver Heaviside
Oliver Heaviside
Oliver Heaviside was a self-taught English electrical engineer, mathematician, and physicist who adapted complex numbers to the study of electrical circuits, invented mathematical techniques to the solution of differential equations , reformulated Maxwell's field equations in terms of electric and...
's brother) experimented with parallel telegraph lines and an unwired telephone receiver, discovering radio induction (later identified with the effects of crosstalk).
Radio
In 1897, with Marconi radio experiments from Lavernock Point in south Wales to the island of Flatholm, became one of Marconi's most ardent supporters. He made various efforts to support Guglielmo MarconiGuglielmo Marconi
Guglielmo Marconi was an Italian inventor, known as the father of long distance radio transmission and for his development of Marconi's law and a radio telegraph system. Marconi is often credited as the inventor of radio, and indeed he shared the 1909 Nobel Prize in Physics with Karl Ferdinand...
in the wireless field. Preece gained financial assistance from the Post Office to help expand Marconi's work. Preece believed that the Earth’s magnetic field
Earth's magnetic field
Earth's magnetic field is the magnetic field that extends from the Earth's inner core to where it meets the solar wind, a stream of energetic particles emanating from the Sun...
was critical in the propagation of radio waves over long distances.
He had a long-standing rivalry with Oliver Heaviside over his traditional ideas about electricity. It was derisively referred to as "the drain-pipe theory" by Heaviside, because Preece presented the analogy
Analogy
Analogy is a cognitive process of transferring information or meaning from a particular subject to another particular subject , and a linguistic expression corresponding to such a process...
of electricity and water for thought experiment
Thought experiment
A thought experiment or Gedankenexperiment considers some hypothesis, theory, or principle for the purpose of thinking through its consequences...
s. Reportedly, he never understood James Clerk Maxwell
James Clerk Maxwell
James Clerk Maxwell of Glenlair was a Scottish physicist and mathematician. His most prominent achievement was formulating classical electromagnetic theory. This united all previously unrelated observations, experiments and equations of electricity, magnetism and optics into a consistent theory...
's advances to "mathematical scientific theory
Mathematical physics
Mathematical physics refers to development of mathematical methods for application to problems in physics. The Journal of Mathematical Physics defines this area as: "the application of mathematics to problems in physics and the development of mathematical methods suitable for such applications and...
" .
Preece once stated, conveying sentiments which were later made by Edwin Armstrong
Edwin Armstrong
Edwin Howard Armstrong was an American electrical engineer and inventor. Armstrong was the inventor of modern frequency modulation radio....
,
- True theory does not require the abstruse language of mathematics to make it clear and to render it acceptable [...] All that is solid and substantial in science and usefully applied in practice, have been made clear by relegating mathematic symbols to their proper store place --- the study. - Preece's inaugural speech as president of the Institution of Electrical EngineersInstitution of Electrical EngineersThe Institution of Electrical Engineers was a British professional organisation of electronics, electrical, manufacturing, and Information Technology professionals, especially electrical engineers. The I.E.E...
in 1893
Preece served as president of the Institution of Civil Engineers
Institution of Civil Engineers
Founded on 2 January 1818, the Institution of Civil Engineers is an independent professional association, based in central London, representing civil engineering. Like its early membership, the majority of its current members are British engineers, but it also has members in more than 150...
between April 1898 and November 1899.
External links
- Russell Naughton, "Adventures in CyberSound: Preece, William Henry".
- "100 Welsh Heroes / 100 Arwyr Cymru", 73. Sir William Henry Preece, Groundbreakers. Culturenet Cymru, 2004.
- Oil on canvas painting by Beatrice Bright of Sir William Preece