YEAR | EVENTS, PUBLISHINGS, WRITINGS | note |
---|---|---|
1679 Dec |
Johann Friedrich died and Ernst August became new Duke of Hannover. | |
1680 | was annoyed by the Harz Project (introducing drain pumps and windmills into the mine of Harz, and applying its benefit to the academy of science). experiments on windmills were made several times, but the Project costed him too much, and in 1685 whole the Project was killed. |
|
1681 about Mar |
conversations with Otto Mencke (a professor of Leipzig University) who is going to start Acta Eruditorum (a philosophical journal that supplies informations and reviews on foreign new books for German philosophers, published in Leipzig from 1682). Leibniz wrote about 50 articles for this Journal (1682-1713). | |
1682 Feb |
De vera propotione circuli ad quadratum circumscriptum in numeris rationalibus the first article published in Acta Eruditorum. | |
1683 Aug |
Mars Christianissimus. the first political pamphlet against Louis 14's aggressive politics, written under a pseudonym (Germanus Gallo-Graecus), in Latin and French, published in Amsterdam, 1684, translated into German, 1685. |
|
1684 Jan |
invented determinants to handle equations of higher degrees conveniently. | |
1684 Oct |
Nova methodus pro maximis et minimis. the first publishing (in Acta Eruditorum) about his differential calculus. |
|
1685 | interests in genealogy and historiography. in connection with researches into the origin and the ancestors of the Duke's family-tree. The interest will send Leibniz to Italy looking for old manuscripts. |
|
1686 Feb |
Discours de métaphysique. through Landgrave Ernst von Hessen-Rheinfels, sent a summary to Antoine Arnauld (a famous Jansenist, philosopher of Port-Royal, who also wrote a book of geometry). Leibniz firstly sent a letter to Arnauld in 1671 (no reply), and has known him since 1672. The text of Discours de métaphysique is not published until 1846. Bertrand Russell will be impressed by the work in 1899. |
1846 |
1686 Feb |
correspondence with Arnauld. published with Discours de métaphysique in 1846. It has become an invaluable source showing the core philosophy of Leibniz. |