Linda Hall Library
Science Engineering Technology

Scientist of the Day

Charles Plumier

April 20, 2017

Charles Plumier, a French botanist, was born Apr. 20, 1646. Plumier made three plant-collecting trips to Central America and the French Antilles in the 1690s, and was about to make a fourth when he died near Cadiz in 1704. He is best known to modern gardeners for his...

Gordon Moore

April 19, 2017

On April 19, 1965, the latest issue of Electronics magazine went on sale (second image).  It contained a short 4-page article by Gordon Earle Moore, called “Cramming more components onto integrated circuits”, in which Moore predicted that integrated...

August Petermann

April 18, 2017

      August Petermann, a German cartographer, was born Apr. 18, 1822. Petermann was a skilled map maker who came to Scotland in 1845 to assist the English map maker A.K. Johnston produce his atlas (Johnston had permission to translate into English the...

Giovanni Battista Riccioli

April 17, 2017

            Giovanni Battista Riccioli, an Italian astronomer, was born Apr. 17, 1598. Riccioli was a Jesuit, which means that, after the condemnation of Galileo in 1633, he was responsible for defending the Church’s position...

Christiaan Huygens

April 14, 2017

        Christian Huygens, a Dutch inventor, astronomer, and mathematical physicist, was born Apr. 14, 1629.  Several years ago, we featured Huygens in this space, marking the day of his death, and at that time we discussed his discovery of the rings of Saturn.  Today...

Richard Trevithick

April 13, 2017

          Richard Trevithick, a Cornish engineer and inventor, was born Apr. 13, 1771. In the late 18th century, the only steam engines available in England were the Newcomen engine and the Watt-Boulton engine. Both were atmospheric engines,...