{"id":233383,"date":"2025-04-09T16:36:22","date_gmt":"2025-04-09T08:36:22","guid":{"rendered":"https:\/\/www.hkubs.hku.hk\/event\/new-explorations-of-the-principle-of-the-lever-in-the-pre-qin-period\/"},"modified":"2025-04-09T16:36:22","modified_gmt":"2025-04-09T08:36:22","slug":"new-explorations-of-the-principle-of-the-lever-in-the-pre-qin-period","status":"publish","type":"event","link":"https:\/\/www.hkubs.hku.hk\/sc\/event\/new-explorations-of-the-principle-of-the-lever-in-the-pre-qin-period\/","title":{"rendered":"New Explorations of the Principle of the Lever in the Pre-Qin Period"},"content":{"rendered":"
INFORMATION<\/h5>\n

New Explorations of the Principle of the Lever in the Pre-Qin Period<\/strong><\/p>\n

The lever is one of the most fundamental simple machines in ancient civilizations. Archaeological discoveries and historical records indicate that as early as the Pre-Qin period, levers were widely employed, particularly in balance instruments and lifting devices. However, references to the principle of the lever in ancient texts are scarce. The only known discussions appear in a few brief and obscure passages in the Mohist Canon, which do not incorporate mathematical analysis. Additionally, the National Museum of China houses two Warring States balance beams from the Chu area. These beams bear evenly spaced markings that were evidently used for weighing calculations, yet their precise function and significance remain unclear. In this Quantitative History Webinar, Boqun Zhou will offer new insights into the mechanics of levers in the Mohist Canon and the scale markings on Chu balance beams. While Mohist discussions on levers lack quantitative analysis, they adopt an approach similar to the modern scientific method of controlled experiments to examine lever functionality. Meanwhile, the scale markings on Chu balance beams reflect an understanding of the mathematical principle that torque is inversely proportional to weight. However, their use appears to have been confined to dividing unit weights, with calculable values restricted to a small set of integer ratios. By considering these two aspects together, we can gain a more precise understanding of how lever mechanics were conceptualized in the Pre-Qin period.<\/p>\n

\u5148\u79e6\u6642\u671f\u69d3\u687f\u539f\u7406\u7684\u65b0\u63a2\u7d22<\/p>\n

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Discussant: Chun Fung Tong, Assistant Professor, School of Chinese\/Hong Kong Institute for the Humanities and Social Sciences, The University of Hong Kong<\/p>\n

*This webinar will be conducted in Mandarin.<\/p>\n

Date: April 17, 2025<\/p>\n

Time: 16:00 – 17:30
\n16:00 (Hong Kong\/Beijing\/Singapore)
\n04:00 (New York)|01:00 (Los Angeles)|09:00 (London)|17:00 (Tokyo)|18:00 (Sydney)<\/p>\n

Venue: Zoom Webinar<\/p>\n

Language: Mandarin<\/p>\n

 <\/p>\n

About the Quantitative History Webinar Series<\/h5>\n

The Quantitative History (QH) Webinar Series aims to provide researchers, teachers, and students with an online intellectual platform to keep up to date with the latest research in the field, promoting the dissemination of research findings and interdisciplinary use of quantitative methods in historical research. The QH Webinar Series, now entering its fifth year, is co-organized by the Centre for Quantitative History at the HKU Business School and the International Society for Quantitative History in partnership with the Hong Kong Institute for the Humanities and Social Sciences. The Series is now substantially supported by the Areas of Excellence (AoE) Scheme from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. [AoE\/B-704\/22-R]).<\/p>\n

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Conveners:
\nZhiwu Chen<\/a>
\nChicheng Ma<\/a><\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"tags":[],"class_list":["post-233383","event","type-event","status-publish","hentry","seminar-categories-quantitative-history-series-sc","event-natures-seminar-calendar","event-natures-sc-economics-seminar-seminar-calendar"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.hkubs.hku.hk\/sc\/wp-json\/wp\/v2\/event\/233383","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hkubs.hku.hk\/sc\/wp-json\/wp\/v2\/event"}],"about":[{"href":"https:\/\/www.hkubs.hku.hk\/sc\/wp-json\/wp\/v2\/types\/event"}],"version-history":[{"count":0,"href":"https:\/\/www.hkubs.hku.hk\/sc\/wp-json\/wp\/v2\/event\/233383\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.hkubs.hku.hk\/sc\/wp-json\/wp\/v2\/media?parent=233383"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hkubs.hku.hk\/sc\/wp-json\/wp\/v2\/tags?post=233383"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}