
Virtual Memorial
Zhang Heng
A Memory Realm virtual memorial place honoring Zhang Heng, remembered for Astronomy, Invention, Han dynasty science.

Why Zhang Heng Is Remembered
Zhang Heng is remembered for astronomy, invention, han dynasty science. This public page gives visitors a concise starting point for understanding why this figure remains part of cultural, civic, scientific, or literary memory.
The page is designed as an accessible introduction rather than an exhaustive account, with source links and image credits kept visible for further reading.
A Virtual Memorial in Memory Realm
This Memory Realm memorial hall turns a map reference into a virtual place for discovery. Visitors can move from the public page to the map and then into a 3D memorial hall connected to Zhang Heng.
The place is part of Memory Realm's virtual layer. It is not a physical marker and does not claim rights, control, access, endorsement, or affiliation connected to a real-world site.
Place Context
Nanyang, Henan, China is used as a broad spatial reference for this memorial hall because it is connected to Zhang Heng's story, memory, or public legacy. The location is intentionally city-level or region-level so the page can provide orientation without implying a claim over a specific property or institution.
Historical Context
Zhang Heng, courtesy name Pingzi, formerly romanized Chang Heng, was a Chinese polymathic scientist and statesman who lived during the Eastern Han dynasty. Educated in the capital cities of Luoyang and Chang'an, he achieved success as an astronomer, mathematician, seismologist, hydraulic engineer, inventor, geographer, cartographer, ethnographer, artist, poet, philosopher, politician, and literary scholar.
Memory Realm presents this context for educational discovery and remembrance, with public source links and media attribution preserved alongside the page content.
Photos

Ancient Chinese Choko seismoscope from 136 A.D.
Unknown author Unknown author, Popular Science Monthly Volume 29, Public domain, via Wikimedia Commons
Source
Zhang Heng 's seismometer internal reproduction with inverted pendulum by Akitsune Imamura of Japan
Seismological Society of Japan, 『地震 第1輯』第10巻第4号(1938年刊), Public domain, via Wikimedia Commons
Source
A full-size replica of the first seismograph invented by Zhang Heng during the reign of the Eastern Han Dynasty (ab. CE 130), displayed at the open-air exposition held in Warsaw, P
Cyborian, Own work, CC BY-SA 4.0, via Wikimedia Commons
SourceSources
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