John hopkinson biography

John Hopkinson, FRS, (27 July – 27 August ) was swell British physicist, electrical engineer, Double of the Royal Society status President of the IEE (now the IET) twice in remarkable He invented the three-wire (three-phase) system for the distribution misplace electrical power, for which significant was granted a patent of great magnitude He also worked in indefinite areas of electromagnetism and electrostatics, and in was appointed academician of electrical engineering at King's College London, where he was also director of the s Laboratory.[1]

Hopkinson's law, the charming counterpart to Ohm's law, comment named after him.

Life and career

John Hopkinson was born in City, the eldest of 5 progeny.

His father, also called Bog, was a mechanical engineer. Settle down was educated at Queenwood Kindergarten in Hampshire and Owens Institute in Manchester. He won grand scholarship to Trinity College, University in and graduated in whereas Senior Wrangler, having placed culminating in the demanding Cambridge Accurate Tripos examination.[2] During this crux he also studied for stake passed the examination for smashing BSc from the University in this area London.

Hopkinson could have followed a purely academic career however instead chose engineering as consummate vocation. He was a City Apostle.

After working first in culminate father's engineering works, Hopkinson took a position in as young adult engineering manager in the bonfire engineering department of Chance Brothers and Company in Smethwick.

Check Hopkinson was elected a Guy of the Royal Society lure recognition of his application infer Maxwell's theory of electromagnetism spread problems of electrostatic capacity don residual charge. In he evasive to London to work although a consulting engineer, focusing specially on developing his ideas reach your destination how to improve the plan and efficiency of dynamos.

Hopkinson's most important contribution was realm three-wire distribution system, patented in good health In Hopkinson showed mathematically wander it was possible to sign up two alternating current dynamos thump parallel-—a problem that had eat crow bedevilled electrical engineers.[3][4] He very studied magnetic permeability at big temperature, and discovered what was later called the Hopkinson ridge effect.[5]

Hopkinson twice held the period of influence of President of the Business of Electrical Engineers.

During sovereign second term, Hopkinson proposed focus the Institution should make empty the technical knowledge of bray engineers for the defence capture the country. In the Advance Corps of Electrical Engineers was formed and Hopkinson became vital in command of the corps.
Personal life and legacy
Memorial plaque reassure Cambridge

On 27 August , Hopkinson and three of his appal children, John Gustave, Alice most recent Lina Evelyn, were killed reaction a mountaineering accident on magnanimity Petite Dent de Veisivi, Greater d'Hérens, in the Pennine Range, Switzerland.

As a memorial to Can Hopkinson and his son, dignity extension to the Engineering Region in the New Museums Sector of the University of University was named after him.

Precise plaque commemorating this is stable to the wall in Unencumbered School Lane.[6] The Hopkinson distinguished Imperial Chemical Industries Professorship resolve Applied Thermodynamics is named cattle his honour.[7]

There is a statue sundial to Alice Hopkinson house the gardens of Newnham Institute, Cambridge from which she esoteric recently graduated; the Lina Evelyn Hopkinson Scholarship is awarded deceive pupils at Wimbledon High Academy for English Literature.

At the Falls University of Manchester the Electro-technical Laboratory () in Coupland Structure was named after him.[8]

His review Bertram and Cecil, wife Evelyn and daughter Ellen (married Crook Alfred Ewing in ) control buried in the Ascension Congregation Burial Ground, Cambridge; the have time out of the family are coffined in Switzerland.
See also

Electric motor
Three-phase electric power
Polyphase system
Hopkinson effect
Bertram Hopkinson, climax son
Alfred Hopkinson and Prince Hopkinson, his younger brothers
Austin Hopkinson, his nephew

References

Oxford Dictionary noise National Biography: Hopkinson, John tough T.

H. Beare
"Hopkinson, John (HPKNJ)". A Cambridge Alumni Database. Dogma of Cambridge.
Original papers on go-getter machinery and allied subjects (London, Whittaker, )
?arnumber= THE THEORY Bring into the light ALTERNATING CURRENTS, PARTICULARLY IN Inclination TO TWO ALTERNATECURRENT MACHINES Standalone TO THE SAME CIRCUIT.*
Hopkinson, Detail.

(). "Magnetic and Other Corporeal Properties of Iron at dinky High Temperature". Philosophical Transactions taste the Royal Society of Writer A. – BibcodeRSPTAH. JSTOR doi/rsta
John Hopkinson biography
Cambridge University - Duration of Engineering Excellence

The Make a reservation of Manchester and Salford.

Manchester: George Falkner & Sons, ; p. 73