Van de Graaff was the designer of the Van de Graaff generator, a device which produces high voltages.
Röntgen was born in Lennep (which is today a borough of Remscheid) in Rhenish Prussiaas the only child of a merchant and manufacturer of cloth. His mother was Charlotte Constanze Frowein of Amsterdam. In March 1848, the family moved to Apeldoorn and Wilhelm was raised in the Netherlands.
n 8 November 1895, produced and detected electromagnetic radiation in a wavelength range today known as X-rays or Röntgen rays, an achievement that earned him the first Nobel Prize in Physics in1901.:1
Count Alessandro Giuseppe Antonio Anastasio Volta (18 February 1745 – 5 March 1827) was an Italian. born in Como, Italy, and taught in the public schools there. known especially for the invention of the battery in 1800.
l Friedrich Christian Mohs (29 January 1773 – 29 September 1839) was a German geologist/mineralogist. Mohs, born in Gernrode, Germany, studied chemistry,mathematics and physics at the University of Halle and also studied at the Mining Academy in Freiberg, Saxony. He deveñpèd the mineral hardness scale
Joseph Priestley, FRS (13 March 1733 (O.S.) – 6 February 1804) was an 18th-century English theologian, Dissenting clergyman, natural philosopher, educator, and political theorist who published over 150 works
He is credited with the doscovery of oxygenr. Benjamin Franklin (January 17, 1706 [O.S. January 6, 1705] – April 17, 1790) was one of the Founding Fathers of the United States. A noted polymath, Franklin was a leading author, printer, political theorist, politician, postmaster, scientist, musician, inventor, satirist, civic activist, statesman, and diplomat. As a scientist, he was a major figure in the American Enlightenment and thehistory of physics for his discoveries and theories regarding electricity. He invented the lightning rod, bifocals, the Franklin stove, a carriage odometer, and the glass 'armonica'. He formed both the first public lending library in America and the first fire department in PennsylvaniAtlantic Ocean currentsElectricityWave thelightMeteorologyConcept of cooling
Temperature's effect on electricalconductivity
Gregor Johann Mendel (July 20, 1822 – January 6, 1884) was an Austrian scientist and Augustinian friar who gained posthumous fame as the founder of the new science of genetics.
born into an ethnic German family in Heinzendorf bei Odrau, Austrian Silesia, Austrian Empire (now Hynčice, Czech Republic), and was baptized two days later as Johann. He was theson of Anton and Rosine (Schwirtlich) Mendel, and had one older sister (Veronica) and one younger (Theresia). They lived and worked on a farm which had been owned by the Mendel family for at least 130 years. hE DEMONSTRATED THE HERENCE F TRAITS
urgh, Scotland on March 3, 1847. The family home was at 16 South Charlotte Street, and has a stone inscription, marking it as Alexander Graham Bell'sbirthplace. He had two brothers: Melville James Bell (1845–70) and Edward Charles Bell (1848–67). Both of his brothers died of tuberculosis. Alexander Graham Bell (March 3, 1847 – August 2, 1922) was an eminent scientist, inventor, engineer and innovator who is credited with inventing the first practical telephone
Marconi was born in Bologna on April 25, 1874, the second son of Giuseppe Marconi,an Italian landowner, and his Irish wife, Annie Jameson, daughter of Andrew Jameson of Daphne Castle in the County Wexford, Ireland and granddaughter of the historic distillery Jameson & Sons. Marconi was educated privately in Bologna in the lab of Augusto Righi, in Florence at the Istituto Cavallero and, later, in Livorno. As a child Marconi did not do well in school. Baptized as a...