Joseph Henry - wikipedia Joseph Henry For other people named Joseph Henry, see Joseph Henry ( disambiguation ). Joseph Henry 1st Secretary of the Smithsonian Institution In office 1846 -- 1878 Succeeded by Spencer Fullerton Baird Personal details ( 1797 - 12 - 17 ) December 17, 1797 Albany, New York, U.S. May 13, 1878 ( 1878 - 05 - 13 ) ( aged 80 ) Washington, D.C., U.S. Nationality American Spouse ( s ) Hariet Henry ( née Alexander ) Children William Alexander ( 1832 -- 1862 ) Mary Anna ( 1834 -- 1903 ) Helen Louisa ( 1836 -- 1912 ) Caroline ( 1839 -- 1920 ) Alma mater The Albany Academy Known for Electromagnetic induction, Inventor of a precursor to the electric doorbell and electric relay Joseph Henry ( December 17, 1797 -- May 13, 1878 ) was an American scientist who served as the first Secretary of the Smithsonian Institution. He was the secretary for the National Institute for the Promotion of Science, a precursor of the Smithsonian Institution. He was highly regarded during his lifetime. While building electromagnets, Henry discovered the electromagnetic phenomenon of self - inductance. He also discovered mutual inductance independently of Michael Faraday, though Faraday was the first to make the discovery and publish his results. Henry developed the electromagnet into a practical device. He invented a precursor to the electric doorbell ( specifically a bell that could be rung at a distance via an electric wire, 1831 ) and electric relay ( 1835 ). The SI unit of inductance, the henry, is named in his honor. Henry 's work on the electromagnetic relay was the basis of the practical electrical telegraph, invented by Samuel F.B. Morse and Sir Charles Wheatstone, separately. Contents 1 Biography 1.1 Influences in aeronautics 1.2 Later years 2 Legacy 3 Curriculum vitae 4 Other honors 5 See also 6 References 7 Further reading 8 External links Biography Henry was born in Albany, New York, to Scottish immigrants Ann Alexander Henry and William Henry. His parents were poor, and Henry 's father died while he was still young. For the rest of his childhood, Henry lived with his grandmother in Galway, New York. He attended a school which would later be named the `` Joseph Henry Elementary School '' in his honor. After school, he worked at a general store, and at the age of thirteen became an apprentice watchmaker and silversmith. Joseph 's first love was theater and he came close to becoming a professional actor. His interest in science was sparked at the age of sixteen by a book of lectures on scientific topics titled Popular Lectures on Experimental Philosophy. In 1819 he entered The Albany Academy, where he was given free tuition. Even with free tuition he was so poor that he had to support himself with teaching and private tutoring positions. He intended to go into medicine, but in 1824 he was appointed an assistant engineer for the survey of the State road being constructed between the Hudson River and Lake Erie. From then on, he was inspired to a career in either civil or mechanical engineering. Historical marker in Academy Park ( Albany, New York ) commemorating Henry 's work with electricity. Henry excelled at his studies ( so much so, that he would often help his teachers teach science ) and in 1826 was appointed Professor of Mathematics and Natural Philosophy at The Albany Academy by Principal T. Romeyn Beck. Some of his most important research was conducted in this new position. His curiosity about terrestrial magnetism led him to experiment with magnetism in general. He was the first to coil insulated wire tightly around an iron core in order to make a more powerful electromagnet, improving on William Sturgeon 's electromagnet which used loosely coiled uninsulated wire. Using this technique, he built the strongest electromagnet at the time for Yale. He also showed that, when making an electromagnet using just two electrodes attached to a battery, it is best to wind several coils of wire in parallel, but when using a set - up with multiple batteries, there should be only one single long coil. The latter made the telegraph feasible. Because of his early experiments in electromagnetism some historians credit Henry with discoveries pre-dating Faraday and Hertz, however, Henry is not credited due to not publishing his work. Joseph Henry, taken between 1865 and 1878, possibly by Mathew Brady. Using his newly developed electromagnetic principle, Henry in 1831 created one of the first machines to use electromagnetism for motion. This was the earliest ancestor of modern DC motor. It did not make use of rotating motion, but was merely an electromagnet perched on a pole, rocking back and forth. The rocking motion was caused by one of the two leads on both ends of the magnet rocker touching one of the two battery cells, causing a polarity change, and rocking the opposite direction until the other two leads hit the other battery. This apparatus allowed Henry to recognize the property of self inductance. British scientist Michael Faraday also recognized this property around the same time. Since Faraday published his results first, he became the officially recognized discoverer of the phenomenon. From 1832 to 1846, Henry served as the first Chair of Natural History at the College of New Jersey ( now Princeton University ). While in Princeton, he taught a wide range of courses including natural history, chemistry, and architecture, and ran a laboratory on campus. Decades later, Henry wrote that he made `` several thousand original investigations on electricity, magnetism, and electro - magnetism '' while on the Princeton faculty. Henry relied heavily on an African American research assistant, Sam Parker, in his laboratory and experiments. Parker was a free black man hired by the Princeton trustees to assist Henry. In an 1841 letter to mathematician Elias Loomis, Henry wrote : The Trustees have however furnished me with an article which I now find indispensible namely with a coloured servant whom I have taught to manage my batteries and who now relieves me from all the dirty work of the laboratory. In his letters, Henry described Parker providing materials for experiments, fixing technical issues with Henry 's equipment, and at times being used as a test subject in electrical experiments in which Henry and his students would shock Parker in classroom demonstrations. In 1842, when Parker fell ill, Henry 's experiments stopped completely until he recovered. Henry was appointed the first Secretary of the Smithsonian Institution in 1846, and served in this capacity until 1878. In 1848, while Secretary, Henry worked in conjunction with Professor Stephen Alexander to determine the relative temperatures for different parts of the solar disk. They used a thermopile to determine that sunspots were cooler than the surrounding regions. This work was shown to the astronomer Angelo Secchi who extended it, but with some question as to whether Henry was given proper credit for his earlier work. In late 1861 and early 1862, during the American Civil War, Henry oversaw a series of lectures by prominent abolitionists at the Smithsonian Institution. Speakers included white clergymen, politicians, and activists such as Wendell Phillips, Horace Greeley, Henry Ward Beecher, and Ralph Waldo Emerson. Famous orator and former fugitive slave Frederick Douglass was scheduled as the final speaker ; Henry, however, refused to allow him to attend, stating : `` I would not let the lecture of the coloured man be given in the rooms of the Smithsonian. '' In the fall of 2014 history author Jeremy T.K. Farley released `` The Civil War Out My Window : Diary of Mary Henry. '' The 262 - page book featured the diary of Henry 's daughter Mary, from the years of 1855 to 1878. Throughout the diary, Henry is repeatedly mentioned by his daughter, who showed a keen affection to her father. Influences in aeronautics Prof. Henry was introduced to Prof. Thaddeus Lowe, a balloonist from New Hampshire who had taken interest in the phenomenon of lighter - than - air gases, and exploits into meteorology, in particular, the high winds which we call the Jet stream today. It was Lowe 's intent to make a transatlantic crossing by utilizing an enormous gas - inflated aerostat. Henry took a great interest in Lowe 's endeavors, promoting him among some of the more prominent scientists and institutions of the day. In June 1860, Lowe had made a successful test flight with his gigantic balloon, first named the City of New York and later renamed The Great Western, flying from Philadelphia to Medford, New York. Lowe would not be able to attempt a transatlantic flight until late Spring of the 1861, so Henry convinced him to take his balloon to a point more West and fly the balloon back to the eastern seaboard, an exercise that would keep his investors interested. Lowe took several smaller balloons to Cincinnati, Ohio in March 1861. On 19 April, he launched on a fateful flight that landed him in Confederate South Carolina. With the Southern States seceding from the Union, during that winter and spring of 1861, and the onset of Civil War, Lowe abandoned further attempts at a trans - Atlantic crossing and, with Henry 's endorsement, went to Washington, D.C. to offer his services as an aeronaut to the Federal government. Henry submitted a letter to U.S. Secretary of War at the time Simon Cameron of Pennsylvania which carried Henry 's endorsement : Hon. SIMON CAMERON DEAR SIR : In accordance with your request made to me orally on the morning of the 6th of June, I have examined the apparatus and witnessed the balloon experiments of Mr. Lowe, and have come to the following conclusions 1st. The balloon prepared by Mr. Lowe, inflated with ordinary street gas, will retain its charge for several days. 2d. In an inflated condition it can be towed by a few men along an ordinary road, or over fields, in ordinarily calm weather, from the places where it is galled ( i.e. swelled or inflated ) to another, twenty or more miles distant. 3d. It can be let up into the air by means of a rope in a calm day to a height sufficient to observe the country for twenty miles around and more, according to the degree of clearness of the atmosphere. The ascent may also be made at night and the camp lights of the enemy observed. 4th. From experiments made here for the first time it is conclusively proved that telegrams can be sent with ease and certainty between the balloon and the quarters of the commanding officer. 5th. I feel assured, although I have not witnessed the experiment, that when the surface wind is from the east, as it was for several days last week, an observer in the balloon can be made to float nearly to the enemy 's camp ( as it is now situated to the west of us ), or even to float over it, and then return eastward by rising to a higher elevation. This assumption is based on the fact that the upper strata of wind in this latitude is always flowing eastward. Mr. Lowe informs me, and I do not doubt his statement, that he will on any day which is favorable make an excursion of the kind above mentioned. 6th. From all the facts I have observed and the information I have gathered I am sure that important information may be obtained in regard to the topography of the country and to the position and movements of an enemy by means of the balloon now, and that Mr. Lowe is well qualified to render service in this way by the balloon now in his possession. 7th. The balloon which Mr. Lowe now has in Washington can only be inflated in a city where street gas is to be obtained. If an exploration is required at a point too distant for the transportation of the inflated balloon, an additional apparatus for the generation of hydrogen gas will be required. The necessity of generating the gas renders the use of the balloon more expensive, but this, where important results are required, is of comparatively small importance. For these preliminary experiments, as you may recollect, a sum not to exceed $200 or $250 was to be appropriated, and in accordance with this Mr. Lowe has presented me with the in closed statement of items, which I think are reasonable, since nothing is charged for labor and time of the aeronautic. I have the honor to remain, very respectfully, your obedient servant, JOSEPH HENRY, Secretary Smithsonian Institution. On Henry 's recommendation Lowe went on to form the United States Army / `` Union Army '' Balloon Corps and served two years with the Army of the Potomac as a Civil War `` Aeronaut ''. Later years Henry 's grave, Oak Hill Cemetery, Washington, D.C. As a famous scientist and director of the Smithsonian Institution, Henry received visits from other scientists and inventors who sought his advice. Henry was patient, kindly, self - controlled, and gently humorous. One such visitor was Alexander Graham Bell, who on 1 March 1875 carried a letter of introduction to Henry. Henry showed an interest in seeing Bell 's experimental apparatus, and Bell returned the following day. After the demonstration, Bell mentioned his untested theory on how to transmit human speech electrically by means of a `` harp apparatus '' which would have several steel reeds tuned to different frequencies to cover the voice spectrum. Henry said Bell had `` the germ of a great invention ''. Henry advised Bell not to publish his ideas until he had perfected the invention. When Bell objected that he lacked the necessary knowledge, Henry firmly advised : `` Get it ! '' On 25 June 1876, Bell 's experimental telephone ( using a different design ) was demonstrated at the Centennial Exhibition in Philadelphia where Henry was one of the judges for electrical exhibits. On 13 January 1877, Bell demonstrated his instruments to Henry at the Smithsonian Institution and Henry invited Bell to demonstrate them again that night at the Washington Philosophical Society. Henry praised `` the value and astonishing character of Mr. Bell 's discovery and invention. '' Henry died on 13 May 1878, and was buried in Oak Hill Cemetery in the Georgetown section of northwest Washington, D.C. John Phillips Sousa wrote the Transit of Venus March for the unveiling of the Joseph Henry statue in front of the Smithsonian Castle. Legacy Henry was a member of the United States Lighthouse Board from 1852 until his death. He was appointed chairman in 1871 and served in that position the remainder of his life. He was the only civilian to serve as chairman. The United States Coast Guard honored Henry for his work on lighthouses and fog signal acoustics by naming a cutter after him. The Joseph Henry, usually referred to as the Joe Henry, was launched in 1880 and was active until 1904. In 1915 Henry was inducted into the Hall of Fame for Great Americans in the Bronx, New York. Bronze statues of Henry and Isaac Newton represent science on the balustrade of the galleries of the Main Reading Room in the Thomas Jefferson Building of the Library of Congress on Capitol Hill in Washington, D.C. They are two of the 16 historical figures depicted in the reading room, each pair representing one of the 8 pillars of civilization. In 1872 John Wesley Powell named a mountain range in southeastern Utah after Henry. The Henry Mountains were the last mountain range to be added to the map of the 48 contiguous U.S. states. At Princeton, the Joseph Henry Laboratories and the Joseph Henry House are named for him. After the Albany Academy moved out of its downtown building in the early 1930s, its old building in Academy Park was renamed Joseph Henry Memorial, with a statue of him out front. It is now the main offices of the Albany City School District. In 1971 it was listed on the National Register of Historic Places ; later it was included as a contributing property when the Lafayette Park Historic District was listed on the Register. Curriculum vitae Statue of Henry before Smithsonian Institution 1826 -- Professor of mathematics and natural philosophy at The Albany Academy, New York. 1832 -- Chair of Natural History at Princeton University ( then the College of New Jersey ) until 1846 1835 -- Invented the electromechanical relay. 1846 -- First secretary of the Smithsonian Institution until 1878 1848 -- Edited Ephraim G. Squier and Edwin H. Davis ' Ancient Monuments of the Mississippi Valley, the Institution 's first publication. 1852 -- Appointed to the Lighthouse Board 1871 -- Appointed chairman of the Lighthouse Board Other honors Elected a member of the American Antiquarian Society in 1851. The District of Columbia named a school, built in 1878 -- 80, on P Street between 6th and 7th the Joseph Henry School. It was demolished at some point after 1932. The Henry Mountains ( Utah ) had been so named by geologist Almon Thompson in his honour. See also Electromagnetism Henry ( unit ) Multiple coil magnet Timeline of historic inventions Timeline of communication technology American Philosophical Society History of Albany, New York References Jump up ^ `` Planning a National Museum ''. Smithsonian Institution Archives. Archived from the original on 3 August 2009. Retrieved 2 January 2010. Jump up ^ `` A Brief History of Electromagnetism '' ( PDF ). Jump up ^ Ulaby, Fawwaz ( 2001 - 01 - 31 ). Fundamentals of Applied Electromagnetics ( 2nd ed. ). Prentice Hall. p. 232. ISBN 0 - 13 - 032931 - 2. Jump up ^ `` Joseph Henry ''. Distinguished Members Gallery, National Academy of Sciences. Archived from the original on 2006 - 12 - 09. Retrieved 2006 - 11 - 30. Jump up ^ Scientific writings of Joseph Henry, Volume 30, Issue 2. Smithsonian Institution. 1886. p. 434. Jump up ^ `` The electromechanical relay of Joseph Henry ''. Georgi Dalakov. Jump up ^ Jerry Marion, Classical Electromagnetic Radiation, Second Edition, p. 107 https://books.google.co.uk/books?id=9kKHPlcNm2kC&pg=PA116&lpg=PA116&dq=marion+4.7+classical+electromagnetic+radiation&source=bl&ots=pkOrqBIQS7&sig=XqV_NtcKrDLB4eeBzNShPiLH340&hl=en&sa=X&sqi=2&ved=0CDkQ6AEwBGoVChMIpNOG-bHyxwIVBAjbCh0npg39#v=onepage&q&f=false ^ Jump up to : Grummitt, Julia ( November 6, 2017 ). `` Joseph Henry and Sam Parker ''. The Princeton & Slavery Project. Retrieved December 18, 2017. ^ Jump up to : Grummitt, Julia ( November 8, 2017 ). `` Princeton and Slavery : The Scientist 's Assistant ''. Princeton Alumni Weekly. Retrieved December 18, 2017. Jump up ^ `` Discourse Memorial by Samuel Bayard Dod ''. A Memorial of Joseph Henry, Published by Order of Congress. Washington, D.C. : Government Printing Office. 1880. p. 143. Jump up ^ Reingold, Nathan ; Rothberg, Marc, eds. ( 1981 ). The Papers of Joseph Henry, Volume 5. Washington, D.C. : Smithsonian Institution Press. p. 29. Jump up ^ Henry, Joseph ( 1845 ). `` On the Relative Radiation of Heat by the Solar Spots ''. Proceedings of the American Philosophical Society. 4 : 173 -- 176. Jump up ^ Magie, W.F. ( 1931 ). `` Joseph Henry ''. Reviews of Modern Physics. 3 ( 4 ) : 465 -- 495. Bibcode : 1931RvMP... 3... 465M. doi : 10.1103 / RevModPhys. 3.465. Jump up ^ Benjamin, Marcus ( 1899 ). `` The Early Presidents of the American Association. II ''. Science. Moses King. 10 : 670 -- 676 ( 675 ). Bibcode : 1899Sci... 10... 670B. doi : 10.1126 / science. 10.254. 670. Retrieved 2007 - 09 - 23. Jump up ^ Hellemans, Alexander ; Bryan Bunch ( 1988 ). The Timetables of Science. New York, New York : Simon and Schuster. p. 317. ISBN 0 - 671 - 62130 - 0. Jump up ^ Mayer, Alfred M. ( 1880 ). `` Henry as a Discoverer ''. A Memorial of Joseph Henry. Washington : Government Printing Office. pp. 475 -- 508. Retrieved 2007 - 09 - 23. ^ Jump up to : Kurin, Richard. `` The Devastating Fire That Nearly Consumed the Smithsonian Castle 150 Years Ago This Month ''. Retrieved December 18, 2017. Jump up ^ Wytheville Enterprise Farley compiles Civil War diary. Jump up ^ Alexander Graham Bell and the Conquest of Solitude, Robert V. Bruce, pp. 139 -- 140 Jump up ^ Alexander Graham Bell and the Conquest of Solitude, Robert V. Bruce, p. 214 Jump up ^ US Coast Guard Cutter Joseph Henry Jump up ^ `` Archived copy ''. Archived from the original on 2011 - 04 - 28. Retrieved 2016 - 03 - 31. Jump up ^ American Antiquarian Society Members Directory Further reading Ames, Joseph Sweetman ( Ed. ), The discovery of induced electric currents, Vol. 1. Memoirs, by Joseph Henry. New York, Cincinnati ( etc. ) American book company ( c1900 ) LCCN 00005889 Coulson, Thomas, Joseph Henry : His Life and Work, Princeton, Princeton University Press, 1950 Dorman, Kathleen W., and Sarah J. Shoenfeld ( comps. ), The Papers of Joseph Henry. Volume 12 : Cumulative Index, Science History Publications, 2008 Henry, Joseph, Scientific Writings of Joseph Henry. Volumes 1 and 2, Smithsonian Institution, 1886 Moyer, Albert E., Joseph Henry : The Rise of an American Scientist, Washington, Smithsonian Institution Press, 1997. ISBN 1 - 56098 - 776 - 6 Reingold, Nathan, et al., ( eds. ), The Papers of Joseph Henry. Volumes 1 - 5, Washington, Smithsonian Institution Press, 1972 -- 1988 Rothenberg, Marc, et al., ( eds. ), The Papers of Joseph Henry. Volumes 6 - 8, Washington, Smithsonian Institution Press, 1992 -- 1998, and Volumes 9 - 11, Science History Publications, 2002 -- 2007 External links Wikimedia Commons has media related to Joseph Henry. Wikisource has original works written by or about : Joseph Henry Finding aid to the Joseph Henry collection at the University of Pennsylvania Libraries The Joseph Henry Papers Project Finding Aid to the Joseph Henry Collection Biographical details -- Proceedings of the National Academy of Sciences ( 1967 ), 58 ( 1 ), pp. 1 -- 10. Dedication ceremony for the Henry statue ( 1883 ) Published physics papers -- On the Production of Currents and Sparks of Electricity from Magnetism and On Electro - Dynamic Induction ( extract ) Joseph Henry Collection, Smithsonian Institution National Academy of Sciences Biographical Memoir Cultural offices Preceded by None Secretary of the Smithsonian Institution 1846 -- 1878 Succeeded by Spencer Fullerton Baird Secretaries of the Smithsonian Institution Joseph Henry ( 1846 ) Spencer Fullerton Baird ( 1878 ) Samuel Pierpont Langley ( 1887 ) Charles Doolittle Walcott ( 1907 ) Charles Greeley Abbot ( 1928 ) Alexander Wetmore ( 1944 ) Leonard Carmichael ( 1953 ) Sidney Dillon Ripley ( 1964 ) Robert McCormick Adams, Jr. ( 1984 ) Ira Michael Heyman ( 1994 ) Lawrence M. Small ( 2000 ) Cristián Samper # ( 2007 ) G. Wayne Clough ( 2008 ) David J. Skorton ( 2015 ) # denotes an acting secretary Presidents of the National Academy of Sciences Alexander Bache ( 1863 ) Joseph Henry ( 1868 ) William Rogers ( 1879 ) Othniel Marsh ( 1883 ) Wolcott Gibbs ( 1895 ) Alexander Agassiz ( 1901 ) Ira Remsen ( 1907 ) William H. Welch ( 1913 ) Charles Walcott ( 1917 ) Albert A. Michelson ( 1923 ) Thomas Morgan ( 1927 ) William Campbell ( 1931 ) Frank Lillie ( 1935 ) Frank B. Jewett ( 1939 ) Alfred Richards ( 1947 ) Detlev Bronk ( 1950 ) Frederick Seitz ( 1962 ) Philip Handler ( 1969 ) Frank Press ( 1981 ) Bruce Alberts ( 1993 ) Ralph J. Cicerone ( 2005 ) Marcia McNutt ( 2016 ) Scientists whose names are used as units SI base units André - Marie Ampère William Thomson, 1st Baron Kelvin SI derived units Henri Becquerel Anders Celsius Charles - Augustin de Coulomb Michael Faraday Louis Harold Gray Joseph Henry Heinrich Hertz James Prescott Joule Isaac Newton Georg Ohm Blaise Pascal Werner von Siemens Rolf Maximilian Sievert Nikola Tesla Alessandro Volta James Watt Wilhelm Eduard Weber Non SI units Anders Jonas Ångström Alexander Graham Bell Marie Curie Pierre Curie John Dalton Peter Debye Loránd Eötvös Daniel Gabriel Fahrenheit Galileo Galilei Johann Carl Friedrich Gauss William Gilbert Heinrich Kayser Johann Heinrich Lambert Samuel Pierpont Langley Heinrich Mache James Clerk Maxwell John Napier Hans Christian Ørsted Jean Léonard Marie Poiseuille William John Macquorn Rankine René Antoine Ferchault de Réaumur Wilhelm Röntgen Sir George Stokes, 1st Baronet John Strutt, 3rd Baron Rayleigh Joseph John Thomson Evangelista Torricelli Scientists whose names are used as SI units Scientists whose names are used as non SI units Scientists whose names are used in physical constants Scientists whose names are used in chemical element names Hall of Fame for Great Americans John Adams John Quincy Adams Jane Addams Louis Agassiz Susan B. Anthony John James Audubon George Bancroft Clara Barton Henry Ward Beecher Alexander Graham Bell Daniel Boone Edwin Booth Louis Brandeis Phillips Brooks William Cullen Bryant Luther Burbank Andrew Carnegie George Washington Carver William Ellery Channing Rufus Choate Henry Clay Grover Cleveland James Fenimore Cooper Peter Cooper Charlotte Cushman James Buchanan Eads Thomas Alva Edison Jonathan Edwards Ralph Waldo Emerson David Farragut Stephen Foster Benjamin Franklin Robert Fulton Josiah W. Gibbs William C. Gorgas Ulysses S. Grant Asa Gray Alexander Hamilton Nathaniel Hawthorne Joseph Henry Patrick Henry Oliver Wendell Holmes Sr. Oliver Wendell Holmes Jr. Mark Hopkins Elias Howe Washington Irving Andrew Jackson Thomas J. Jackson Thomas Jefferson John Paul Jones James Kent Sidney Lanier Robert E. Lee Abraham Lincoln Henry Wadsworth Longfellow James Russell Lowell Mary Lyon Edward MacDowell James Madison Horace Mann John Marshall Matthew Fontaine Maury Albert A. Michelson Maria Mitchell James Monroe Samuel F.B. Morse William T.G. Morton John Lothrop Motley Simon Newcomb Thomas Paine Alice Freeman Palmer Francis Parkman George Peabody William Penn Edgar Allan Poe Walter Reed Franklin D. Roosevelt Theodore Roosevelt Augustus Saint - Gaudens William Tecumseh Sherman John Philip Sousa Joseph Story Harriet Beecher Stowe Gilbert Stuart Sylvanus Thayer Henry David Thoreau Mark Twain Lillian Wald Booker T. Washington George Washington Daniel Webster George Westinghouse James McNeill Whistler Walt Whitman Eli Whitney John Greenleaf Whittier Emma Willard Frances E. Willard Roger Williams Woodrow Wilson Orville Wright Wilbur Wright BNE : XX4682223 BNF : cb123174139 ( data ) GND : 119093839 ISNI : 0000 0000 8076 4334 LCCN : n79023046 NARA : 10582817 SNAC : w6x16x2w SUDOC : 03207459X VIAF : 14839917 Retrieved from `` https://en.wikipedia.org/w/index.php?title=Joseph_Henry&oldid=843449246 '' Categories : 1797 births 1878 deaths American physicists People from Albany, New York People associated with electricity American people of Scottish descent Secretaries of the Smithsonian Institution Burials at Oak Hill Cemetery People from Galway, New York Hall of Fame for Great Americans inductees Members of the American Antiquarian Society Hidden categories : Pages using infobox officeholder with unknown parameters All articles with unsourced statements Articles with unsourced statements from May 2018 Wikipedia articles with BNE identifiers Wikipedia articles with BNF identifiers Wikipedia articles with GND identifiers Wikipedia articles with ISNI identifiers Wikipedia articles with LCCN identifiers Wikipedia articles with NARA identifiers Wikipedia articles with SNAC - ID identifiers Wikipedia articles with SUDOC identifiers Wikipedia articles with VIAF identifiers Talk Contents About Wikipedia Wikisource Беларуская Беларуская ( тарашкевіца ) ‎ Български Bosanski Català Čeština Deutsch Ελληνικά Español Esperanto Euskara فارسی Français Gaeilge 한국어 Հայերեն Hrvatski Interlingua Italiano עברית Kreyòl ayisyen Latina Latviešu Magyar Македонски Nederlands 日本 語 Norsk Norsk nynorsk ਪੰਜਾਬੀ پنجابی ភាសា ខ្មែរ Piemontèis Polski Português Română Русский Scots Srpskohrvatski / српскохрватски Basa Sunda Suomi Svenska Tagalog தமிழ் Türkçe Українська Tiếng Việt 中文 40 more Edit links This page was last edited on 29 May 2018, at 07 : 02 ( UTC ). 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Question: which american inventor invented the commercial telegraph based on joseph henry work
Answer: Samuel F. B. Morse