2025-10-29T15:12:44Z https://yabu.me Thony Christie https://yabu.me/npub1wspt7d66rkz4ekxqjp7ndssvzlxqz2ehaz6f8mjv3krr2ew5ujnq93rhgk https://media.historians.social/accounts/avatars/109/461/663/990/320/014/original/0f4d2b4eae8e6f82.png https://media.historians.social/accounts/avatars/109/461/663/990/320/014/original/0f4d2b4eae8e6f82.png https://yabu.me/nevent1qqsrjyydp86felnh9a0kns50ch5amqsm3em9h5v36dffk7swpp96cfqzyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2vxjr98r Book review: The history of science in Islamicate culture #histsci <br/><a href="https://thonyc.wordpress.com/2025/09/10/the-history-of-science-in-medieval-islamicate-culture/">https://thonyc.wordpress.com/2025/09/10/the-history-of-science-in-medieval-islamicate-culture/</a><br/> <img src="https://media.historians.social/media_attachments/files/115/178/966/259/801/051/original/ddc68efa58912a8f.jpg"> <br/> <img src="https://media.historians.social/media_attachments/files/115/178/967/730/548/070/original/6f21e3b352e5b663.jpg"> <br/> <img src="https://media.historians.social/media_attachments/files/115/178/969/641/641/102/original/b9e376f603401513.jpg"> <br/> <img src="https://media.historians.social/media_attachments/files/115/178/970/906/444/956/original/fb38dcb1e5f30120.jpg"> <br/> 2025-09-10T08:07:06Z https://yabu.me/nevent1qqsqkcq2578a7qlvh79dcnef0t8t2kjgf5vg6mvjefqnd3tqezsnsygzyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2va94u0c Jesuit mathematician, Girolamo Saccheri. who almost discovered non-Euclidian geometry but didn&#39;t realise it, was born 5 September 1667 #histsci <br/><a href="https://thonyc.wordpress.com/2013/09/05/the-problem-with-parallels/">https://thonyc.wordpress.com/2013/09/05/the-problem-with-parallels/</a> 2025-09-05T06:00:38Z https://yabu.me/nevent1qqsr85t7a9lnyraemgu8cd4awmpzk2wmahade5ye65und8v736xp9zszyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2vx369x3 In reply to <a href='/nevent1qqspnswk380rtjxhsu68wzlhjjxgpdavw8taqlrnctdam5fuajwwrrc0px475'>nevent1q…x475</a><br/>_________________________<br/><br/>Small terminological comment, they are Keplerian orbits not Newtonian 2025-07-29T15:49:11Z https://yabu.me/nevent1qqsyuftpuwqpx768xx74mccu4qm7ww899wtz4m9d6vnt7lpn30zqu0czyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2v9kyh3g In reply to <a href='/nevent1qqsqnghefsjn97cv6p73r5vsdxn08ahlhd35zwagesmyxxkaz7cj4fcf0whys'>nevent1q…whys</a><br/>_________________________<br/><br/>I find it quite frankly bizarre that you dismiss as the self serving rants of a bitter old man a paragraph, that if you bothered to read it, is an exuberant hymn of praise to Lovelace and her abilities! 2025-06-05T17:05:05Z https://yabu.me/nevent1qqsxtrnu6zyl33k5nk9t7k6lry3mkx6twqs0twdhr0z403zwgyvshgqzyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2v7clv48 In reply to <a href='/nevent1qqs2hquvfm29lu5fu0dv75fyxy98nr4zkhlayezh84adc0kaafa50acwjk7nm'>nevent1q…k7nm</a><br/>_________________________<br/><br/>So what? Do you think that professional historians of science shouldn&#39;t care when people deliver ahistorical bullshit in their discipline? 2025-06-05T12:40:51Z https://yabu.me/nevent1qqsz9cknncmaj57ecrthk4vapp4xqymzc832ze8pdlwu0l5wuslqm3gzyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2vttm6gq In reply to <a href='/nevent1qqsv2wanwxyfh6uyzqtlzd5hz70mjstktgt92hdfxjy0vsqrr2v63lggkvz2q'>nevent1q…vz2q</a><br/>_________________________<br/><br/>Just accept the fact that it&#39;s ahistorical bullshit, which it is 2025-06-05T12:40:08Z https://yabu.me/nevent1qqsrukma0znsp5x8ejw593r5mglc0hs76f4dxr76yckd6afjdlrmy5czyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2vamcrwt In reply to <a href='/nevent1qqsw6d82axkdsj97vwymtvjvf92vf7zpzgukdq9pqs9gfhs0vae070ggfql6j'>nevent1q…ql6j</a><br/>_________________________<br/><br/>Not entirely accurate is putting it mildly. However, people read it and think it is somehow close to the historical reality which it very definitely isn&#39;t. 2025-06-05T11:54:49Z https://yabu.me/nevent1qqs02c2ld4fmazq8vsrmrmwe4vv56uyx4u6k9wvjw6ja5acynwthh9szyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2v3v75rr In reply to <a href='/nevent1qqspszw2pemrk9kmr96lggujgz9ycxxarxgf9ay60q0tpww4lz2l00czfv369'>nevent1q…v369</a><br/>_________________________<br/><br/>Historically highly inaccurate and very misleading 2025-06-05T09:12:45Z https://yabu.me/nevent1qqsy0yugssf4t7sywv7tqxuapk5f0q65387swlt0nljfvhe2t33u6xqzyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2v3u4aa6 In reply to <a href='/nevent1qqs8qdgtg759walkwqprlj3v8hzsyc4ltfqegcym304euxegp8d6hxskrp8a2'>nevent1q…p8a2</a><br/>_________________________<br/><br/>Ada Lovelace and Charles Babbage did not collaborate on the Analytical Engine. And the first published program, as you call it, was written by Babbage alone 2025-06-05T09:12:09Z https://yabu.me/nevent1qqs856n5w25sqxcukwaemm7zf5hcsp0suu4lvd92aatyvcxmuykgtmqzyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2vtehmfe In reply to <a href='/nevent1qqs2ul2kl6whwpwg8qp67w5hr0lzqf9pds33asyxmghak9tk9890m8s78vzal'>nevent1q…vzal</a><br/>_________________________<br/><br/>Although it does look interesting 🙃 2025-04-24T09:29:54Z https://yabu.me/nevent1qqs2ul2kl6whwpwg8qp67w5hr0lzqf9pds33asyxmghak9tk9890m8szyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2vmvha6u In reply to <a href='/nevent1qqsxwmk9axs7557jcrhfg6czqff30xfu664h3z7005gjrkg6wxnzlds8qe8m4'>nevent1q…e8m4</a><br/>_________________________<br/><br/>Get thee behind me Satan!<br/><br/>As if my to read pile wasn&#39;t big enough already! 2025-04-24T06:00:19Z https://yabu.me/nevent1qqs0xjdstvz8mk2tml4uayk5jdd4mx07kwrwqt9wlpzzsak2pal266szyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2vvqftzp In reply to <a href='/nevent1qqs0r3xdwh89qd3cp3g2yhqct2y7csyfw2nsvq8kjec7v96cpydynsqnrrfcf'>nevent1q…rfcf</a><br/>_________________________<br/><br/>I think it’s a real and a serious problem. I for one wouldn’t go anywhere near the US in the current climate 2025-04-12T18:29:46Z https://yabu.me/nevent1qqsdc5h37mhe9uvtvkfjcd9f5ed0tm0mpg49keas3m8r032sxzf6x8gzyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2v2racv0 In reply to <a href='/nevent1qqsrplhuthvx5dv22ztltadj4jhr4904c8chhlwjc5fwj5u5u40nh7qgv5xyc'>nevent1q…5xyc</a><br/>_________________________<br/><br/>In 2014 I was still very much lurking on the fringes. I was never officially part of it but I ended up holding a lecture there in 2019. I became good friends with Michael Lackner the director and am now good friends with his successor Andrea Bréard. I still work with/for Petra Schmidl who was also a fellow there<br/><a href="https://www.ikgf.uni-erlangen.de/people/index.shtml/petra-g.-schmidl.shtml">https://www.ikgf.uni-erlangen.de/people/index.shtml/petra-g.-schmidl.shtml</a> 2025-01-25T20:42:07Z https://yabu.me/nevent1qqsd09z84pgrnr8f7chwwdm2rlq0hp700wxxn2jg967zuhpgu2k5c8czyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2vc9rpx9 In reply to <a href='/nevent1qqsrplhuthvx5dv22ztltadj4jhr4904c8chhlwjc5fwj5u5u40nh7qgv5xyc'>nevent1q…5xyc</a><br/>_________________________<br/><br/>It was originally a five year research project which got extended twice. It has been superseded by a new research project called CAS_E 2025-01-25T20:33:24Z https://yabu.me/nevent1qqs98my94z4juzu3cav32qws7zg97ayws9g094vdckmjunxc87tk8dczyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2v64hrl5 In reply to <a href='/nevent1qqsf9hcjph2n3g7qcgkhnedecvekr5uekmvfl679u5ppfyfuyl7rz4sgalt9e'>nevent1q…lt9e</a><br/>_________________________<br/><br/>What’s your wife’s name? I was active in the IKGF from 2014 till it closed in 2022, our paths might have crossed 2025-01-25T18:39:34Z https://yabu.me/nevent1qqs2pgzjhx8dt609pukpw78cuslhdhnmw8ajshdw35c3x0w7jmgvzpszyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2vmmwfd5 In reply to <a href='/nevent1qqsyujysgnmjh09xpdseeqvaayxttcnc453pqm2c0gz0qtweut4eh8qzlejmp'>nevent1q…ejmp</a><br/>_________________________<br/><br/>when were you in Erlangen John? 2025-01-25T17:22:07Z https://yabu.me/nevent1qqsppejwcd0x3ye6jtnhleqca462ultpt8fl3ktfe2p4ssatx96aleqzyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2v7kxmzj In reply to <a href='/nevent1qqspd4up47kypuke3ln88lfmxq8frcdhf7y6elnhy7tw33sm5s8gvvsgyz699'>nevent1q…z699</a><br/>_________________________<br/><br/>I live just outside Erlangen 2025-01-25T11:32:15Z https://yabu.me/nevent1qqsxvaec0z3gmrazl3pmccyuu8qqu4z57tradhkmsa8g0hyhz7nuezqzyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2vhhfrel In reply to <a href='/nevent1qqsvy9vvhjhmp5dqns8wejfu4e88sugex0megnsduv8xcy4j9ztcdpchawa4s'>nevent1q…wa4s</a><br/>_________________________<br/><br/>It’s obvious, they’re fairies 2024-12-17T18:45:31Z https://yabu.me/nevent1qqstqjjdxtaxu42r3cakv9zw7kynracwdthmf33l03pgaxfr7kdn4qczyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2vpp0rmv In reply to <a href='/nevent1qqsy8t9mmfwwdg5cpgqkjfxlnu9hv2ucam4wcna9xe3k246s2lrxepc2mwe2r'>nevent1q…we2r</a><br/>_________________________<br/><br/>Get writing then! 2024-12-15T21:04:41Z https://yabu.me/nevent1qqsd3ha9678p7u4xq5wz634h4753hvf5zuy5yvn5tyh96vpwyulvkxszyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2vjvlgmm In reply to <a href='/nevent1qqsy5jaj32f8ss373kxfkrc6m3an4z6zzqn92uugua9h4zam87cudgq64739x'>nevent1q…739x</a><br/>_________________________<br/><br/>I don’t think there is one 2024-12-15T20:28:48Z https://yabu.me/nevent1qqsrddy6qtgsmq7l8n7cal2ff8d6jh729qmpxxec40vf8ga9ge8syeszyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2vjqy6kz In reply to <a href='/nevent1qqsd8wgw23jmfdmslxsrve8vtx2kyfpx5d4pew3drwsq25m9kuxhepg5uyxvs'>nevent1q…yxvs</a><br/>_________________________<br/><br/>I hadn&#39;t read all of John&#39;s posts on the topic when I wrote my response to Rob. BTW Copernicus learnt his astronomy from Georg von Peuerbach&#39;s Theoricae Novae Planetarum 2024-12-15T11:14:56Z https://yabu.me/nevent1qqsd8wgw23jmfdmslxsrve8vtx2kyfpx5d4pew3drwsq25m9kuxhepgzyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2vxnyxj3 In reply to <a href='/nevent1qqspgwjzey0r3w9rysg484htj07w7u26chs2hfry5qh4c3mqfvlywgq3kymmn'>nevent1q…ymmn</a><br/>_________________________<br/><br/>printed by Regiomontanus in 1472, had less circles that Copernicus&#39; heliocentric deferent/epicycle model in De revolutionibus. The first person to point this out, and the claim that Copernicus&#39; system was simpler was a myth, was Arthur Koestler in his The Sleepwalkers in 1959. The philosopher Wilhelm Kamlah has already pointed it out in German in a paper from, I think, 1948. I have drawn attention to the myth in various blog posts. 2024-12-15T11:11:07Z https://yabu.me/nevent1qqspgwjzey0r3w9rysg484htj07w7u26chs2hfry5qh4c3mqfvlywgqzyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2vss5wtq In reply to <a href='/nevent1qqsvw5ex700r8da9r9d6nyt7n7p3jgm9z7val777nkvvnc6favtna6gkjqul5'>nevent1q…qul5</a><br/>_________________________<br/><br/>Not directly but the myth is very widely spread. Somewhere, Thomas Kuhn made the claim that in the Middle Ages astronomers kept adding circles on circles to the Ptolemaic geocentric model and this was the crisis that led to the paradigm shift represented by Copernicus and heliocentricity. Owen Gingerich pointed out that this was rubbish and that the geocentric model in Georg von Peuerbach&#39;s Theoricae Novae Planetarum, which was the first European printed astronomy book 2024-12-15T11:04:07Z https://yabu.me/nevent1qqsx8wu3c4fqkrejfk4zwqf4ght6rdlx4pj5tzx3qerce3d2r5a6cgqzyp6q90ehtgwc2hxcczg86dkzpstucqftxl5tfylwfjxcvdt96nj2vzeyuaf The world&#39;s oldest dated printed arithmetic book the Arte dell&#39;Abbaco or Traviso Arithmetic was published on 10 December 1478 #histsci #bookhistory <br/><a href="https://thonyc.wordpress.com/2018/12/10/printing-the-hindu-arabic-numbers/">https://thonyc.wordpress.com/2018/12/10/printing-the-hindu-arabic-numbers/</a> 2024-12-10T06:31:40Z