# scientist

Showing 1–12 of 21 results

##### Seibert microscope, vintage engraving

Description of a Seibert microscope, vintage engraving XIX century

##### XVIII century, work desk and workroom of a microscopist

Decription of the workroom of a scientist microscopist exploring the micro world in XVIII century

##### Compound microscope, vintage engraving XIX century

Compound microscope uses a lens close to the object being viewed to collect light and focuses a real image of the object inside the microscope. That image is then magnified by a second lens( eyepiece) that gives the viewer an … Continued

##### William Henry Fox Talbot,British scientist and inventor, vintage engraving XIX century

Portrait of William Henry Fox Talbot (11 February 1800 – 17 September 1877) , British scientist and inventor, precursors to photographic processes of 20th century

##### Johann Carl Friedrich Gauss, German mathematician engraving portrait

Portrait of Johann Carl Friedrich Gauss (30 April 1777 – 23 February 1855) German the greatest mathematician since antiquity, contributor with significative studies to number theory, algebra, statistics, analysis, differential geometry, geodesy, geophysics, mechanics, electrostatics, astronomy, matrix theory and optics.

##### Pierre-Simon marquis de Laplace French scientist, vintage engraving

Portrait of Pierre-Simon marquis de Laplace (23 March 1749 – 5 March 1827) French mathematician, physicist and astronomer, creator of the Laplacian differential operator. He was one of the first scientists to postulate the existence of black holes and the … Continued

##### Gottfried Wilhelm von Leibniz, German philosopher and mathematician of XVII century

Portrait of Gottfried Wilhelm von Leibniz (1 July 1646 – November 14, 1716) , German philosopher, mathematician and physicist, developer of the differential and integral calculus and creator of binary number system, which is the foundation of virtually all digital … Continued

##### René Descartes French philosopher and scientist, vintage engraving XVII century

Portrait of René Descartes (31 March 1596 – 11 February 1650) known also as Renatus Cartesius, French philosopher, mathematician and scientist , father of the analytical geometry, of the infinitesimal calculus and of three dimensional coordinate system.

##### Christiaan Huygens Dutch mathematician and scientist of XVII century, vintage engraving

Christiaan Huygens (14 April 1629 – 8 July 1695) Dutch mathematician,astronomer, physicist, probabilist and horologist.He invented the pendulum clock

##### Doctorate presentation at Altdorf University, 18th century

Doctorate at Altdorf University near Nuremberg, XVIII century vintage engraving

##### Chemistry: burning hydrogen produces pure water

How to prove that burning hydrogen produces pure water as “ash”. In the left-hand bottle bits of zinc are oxidised by a diluted sulphuric acid being poured in; the resulting hydrogen is collected through the second neck and exiccated in … Continued

##### Chemistry: how to obtain hydrogen at room temperature

An easy way to obtain hydrogen at room temperature. Bits of zinc were put on the bottom of a bottle; an 1:8 sulphuric acid solution was poured through the primary neck thus binding the water oxygen as zinc oxide, and … Continued