It varied, usually ANY size he wanted to!
in 1895-1899,
He was a professor of comparative anatomy at the University of Jena for most of his life.
Ernst Haeckel produced his beautiful works of art from sketches that he had made, using only watercolours. This was inspired by the amazing symmetrical figures of nature that his studies as a biologist and naturalist. His impressive life's achievements are shown in the links below.
Ernst Heakal is not a widely recognized artist, and there may be some confusion regarding the name. If you meant Ernst Haeckel, the German biologist and artist known for his detailed illustrations of marine life, his artwork varied in the time it took to create, often depending on the complexity of the subjects. Haeckel produced many of his pieces quickly, often completing detailed illustrations in a matter of days or weeks. For specific timelines, direct references to his work or exhibition records would be needed.
The father of protistology is often considered to be the German biologist Ernst Haeckel. He coined the term "protista" in 1866 to describe a diverse group of microorganisms that do not fit into the categories of plants, animals, or fungi. Haeckel's work laid the foundation for the scientific study of protists, which encompasses a wide variety of unicellular and simple multicellular organisms.
Ernst Haeckel was inspired by his deep interest in nature and his fascination with the emerging fields of biology and evolution. He was particularly influenced by Charles Darwin's theory of evolution, which shaped his understanding of the interconnectedness of life. Haeckel's artistic background also played a role, as he sought to illustrate the beauty and complexity of living organisms, leading him to create detailed drawings and classifications that highlighted both aesthetic and scientific aspects of biology. His work aimed to promote a holistic view of life, emphasizing the unity of all living beings.
2013
two children are threatend by a nightengale
The invention of the electron microscope and work on electron optics
Howard Florry ( 1898 - 1968 ) and Ernst Boris Chain ( 1906 - 1979 ) furthered Alexander Flemming's work in creating antibiotics.
Ernst Sieber has written: 'Menschenware, wahre Menschen' -- subject(s): Church work with the poor, Homeless persons, Shelters for the homeless
he used oil paints , brushes and tempre to produce his 3d art work