https://principia.blog/2021/09/23/desaguliers-hogs-bladders-and-st-pauls-cathedral/https://principia.blog/wp-content/uploads/2021/06/gettyimages-90771315-e1632424480721.jpegJohn Theophilus Desaguliers, scientist and inventor, 1725.UNITED KINGDOM - JUNE 28: Engraving by P Pelham after an original painting by H Hysing. Desaguliers (1683-1744), a French-born British inventor and scientist, became experimental assistant to Sir Isaac Newton. He designed a project to heat salt-boilers and similar vessels by steam rather than fire. He added a safety valve to Thomas Savery's steam engine, which along with an internal water jet, condensed the steam in the displacement chambers, improving the design. He appears here holding a magnifying glass, with a glass prism on the table. (Photo by SSPL/Getty Images)2022-05-18T21:40:30+00:00monthlyhttps://principia.blog/2021/06/07/gottfried-kirch-maria-calendars/https://principia.blog/wp-content/uploads/2021/06/gottfried_kirch-e1623102114100.jpegGottfried_Kirch2022-05-18T21:40:12+00:00monthlyhttps://principia.blog/2021/05/06/newton-a-priest-of-nature/https://principia.blog/wp-content/uploads/2021/05/cul3996fol93v-comet.jpegCUL3996fol93v comet2024-09-26T07:15:16+00:00monthlyhttps://principia.blog/2021/04/26/newton-halley-comets/https://principia.blog/wp-content/uploads/2021/04/newtondrawing.jpegNewtonDrawing2022-05-18T21:39:27+00:00monthlyhttps://principia.blog/2021/03/21/newton-and-the-orbit-of-comets/https://principia.blog/wp-content/uploads/2021/03/blake-painting-newton.jpegNewton by William BlakeSIR ISAAC NEWTON(1642-1727); WILLIAM BLAKE. TATE GALLERY. Undated.2024-01-28T01:21:58+00:00monthlyhttps://principia.blog/2021/03/10/some-simple-arithmetic/https://principia.blog/wp-content/uploads/2021/03/an_18th_century_set_of_napiers_bones.jpegAn_18th_century_set_of_Napier's_Bones2022-05-18T21:38:52+00:00monthlyhttps://principia.blog/2021/02/25/calculus-in-newtons-principia/https://principia.blog/wp-content/uploads/2021/02/emilie1.jpgEmilie1https://principia.blog/wp-content/uploads/2021/02/screenshot-2021-02-25-at-19.00.37.pngScreenshot 2021-02-25 at 19.00.372022-05-18T21:38:22+00:00monthlyhttps://principia.blog/2021/02/07/newtons-inverse-square-law/https://principia.blog/wp-content/uploads/2021/02/cycloidal_pendulum_demonstration.pngCycloidal_pendulum_demonstration2022-05-18T21:37:53+00:00monthlyhttps://principia.blog/2021/02/02/a-question-of-definitions/2022-05-18T21:37:11+00:00monthlyhttps://principia.blog/2021/02/01/the-apple-and-the-moon/2022-05-18T21:36:50+00:00monthlyhttps://principia.blog/2022/05/18/newton-lecture-lincoln-university-26-april-2022/https://principia.blog/wp-content/uploads/2022/05/book-on-wood.jpegBook on wood2022-05-18T21:35:51+00:00monthlyhttps://principia.blog/about/2021-01-27T22:12:07+00:00weekly0.6https://principia.blogdaily1.02024-09-26T07:15:16+00:00