Scientist of the Day

John Edmonstone

June 19, 2020

John Edmonstone, a black slave, was born we know not where or when, with a name and a lineage unrecorded.  Today, June nineteenth, seems a good day to celebrate his life.  John entered the historical record when he was encountered by Charles Waterton, an eccentric...

Maurits Escher

June 17, 2020

Maurits Cornelis Escher, a Dutch graphic artist, was born June 17, 1898. I am sure everyone has seen an Escher woodcut or lithograph at some point, perhaps one of his early tessellations, such as Day and Night (1938).  Moving out from tessellations, Escher began to...

Georg Eberhard Rumpf

June 15, 2020

Georg Eberhard Rumpf, a Dutch naturalist, died June 15, 1702, at age 74. Rumpf (often referred to as Rumphius) joined the Dutch East India Company in 1652 and sailed to the island of Ambon in the Molucca Islands (now known as the Maluku Islands, Indonesia).  He was a...

Edward Troughton

June 12, 2020

Edward Troughton, an English instrument maker, died on June 12, 1835; he was born on an unknown day in 1753.  Troughton built and sold a variety of astronomical instruments and telescopes; today, we are going to focus on his specialty, the transit instrument.  A...

Ewald Jürgen von Kleist

June 10, 2020

Ewald Jürgen von Kleist, a Pomeranian cleric, judge, and dabbler in electrical science, was born June 10, 1700. For 23 years, von Kleist had been Dean of the Cathedral in Kamien Pomorski, Pomerania, in northwest Poland, when on Oct. 11, 1745, in a most unclerical...

Johan Keulemans

June 8, 2020

Johan Gerard Keulemans, a Dutch illustrator, was born June 8, 1842. Keulemans moved to London in 1868 and almost immediately became one of the most sought-after zoological artists for a new wave of natural history books that was beginning to appear. After the...