JOHANN KONRAD DIPPEL, 1673–1734

"Notitia CŒrulei Berolinensis Nuper Inventi" on the 300th anniversary of the first publication on Prussian blue.

Prussian Blue (ferric hexacyanoferrate (II)), discovered accidentally in 1706 in Berlin by Johann Jacob Diesbach (1) and Johann Konrad Dippel (2), remains an intensively investigated material. Currently, more than 200 scientific publications with Prussian Blue as a research subject are published annually. Johann Leonhard Frisch (see below) and Diesbach produced Prussian Blue in the years follow...

On two letters from Caspar Neumann to John Woodward revealing the secret method for preparation of Prussian blue.

Prussian Blue (ferric hexacyanoferrate(II)) was discovered accidentally by Johann Jacob Diesbach (1) and Johann Konrad Dippel (2) in Berlin in 1706 (3). As the first synthetic pigment, Prussian Blue received its name from the country in which its discovery occurred. It revolutionized the use of the color blue in artwork because it was less expensive and/or more stable than other blue pigments o...

Johann Wolfgang

Edvard Konrad

This paper explores the relationships between basic cultural characteristics of countries and some economic indexes. As cultural characteristics, the data from The Global Leadership and Organizational Behavior Effectiveness Research Program (GLOBE) about the 9 cultural dimensions for 60 countries were used. Two facets of cultural dimensions were measured: the perceptions of actual practices and...

Konrad Lorenz

Born on 7 November 1903, Lorenz was the second and last child of Emma Lorenz and Dr. Adolf Lorenz, a distinguished and wealthy orthopedic surgeon. Growing up in comfortable surroundings at the family home in the village of Altenberg, on the outskirts of Vienna, the young Lorenz was allowed to pursue his enthusiasms as an animal lover. His interest in animals and evolution as an adolescent led h...