Jan von delft galileo biography
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De Groot, Jan Cornets (NNBW gives his name also as Johan Hugo de)
- 1. Dates
- Born: Kraayenburg (between Delft and The Hague, 8 March
- Died: Delft, 3 May
- Dateinfo: Dates Certain
- Lifespan: 86
- 2. Father
- Occupation: Aristocrat
- Apparently a Delft patrician.
- It seems clear from the details of his life that de Groot inherited sufficient wealth to live well. Nothing is said; I'll call the family affuent.
- 3. Nationality
- Birth: Dutch
- Career: Dutch
- Death: Dutch
- 4. Education
- Schooling: Leiden; Douai, M.A.
- He enrolled in the University of Leiden when it was opened in
- M.A. and at Douai.
- In he was awarded the doctorate of law by the University of Leiden. I feel certain that this was honorary, and I won't list it.
- 5. Religion
- Affiliation: Obviously Calvinist
- 6. Scientific Disciplines
- Primary: Mechanics
- Subordinate: Optics
- De Groot was a distinqueshed amateur scientist, and best known for the experiment he per
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Galileo's Leaning Tower of Pisa experiment
Celebrated demonstration of gravity
Between and ,[1] the Italian scientist Galileo Galilei (then professor of mathematics at the University of Pisa) is said to have dropped "unequal weights of the same material" from the Leaning Tower of Pisa to demonstrate that their time of descent was independent of their mass, according to a biography by Galileo's pupil Vincenzo Viviani, composed in and published in [2][3]:19–21[4][5] The basic premise had already been demonstrated by Italian experimenters a few decades earlier.
According to the story, Galileo discovered through this experiment that the objects fell with the same acceleration, proving his prediction true, while at the same time disproving Aristotle's theory of gravity (which states that objects fall at speed proportional to their mass). Though Viviani wrote that Galileo conducted "repeated experiments made from the he
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Modern art aficionados should recognize that the art world of the twentieth century bears little resemblance to the era of Johannes Vermeer. In the seventeenth century, the concept of private art galleries, eagerly anticipated international exhibitions, critical art reviews in newspapers, and extensive art commentary was virtually non-existent. Dutch painters, largely viewing themselves as mere skilled craftsmen, rarely documented their thoughts about themselves or their work. The general Dutch populace was not acutely aware of their living amidst the 'Golden Age of Dutch Painting,' and the way art was appreciated and discussed then differs markedly from our modern perspectives.
The primary historical records concerning seventeenth-century Dutch artists, including Vermeer, are predominantly legal and transactional documents — notarial depositions, business records, and municipal clerical entries. These documents often present an individual's life from a rather adversarial viewpoi