125 ⟶ Zhang Heng invents the Water-Powered Armillary Sphere

Zhang Heng of China invents the world's first water-powered ...
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132

⚙️ Du Shi Invents Hydraulic-Powered Bellows for Iron Smelting

Du Shi, Chinese inventor and politician⟶
Du Shi Invents Hydraulic-Powered Bellows for Iron Smelting (39)
Han DynastyMetallurgy
ChinaChina

🔭 Zhang Heng's Contributions to Science

Zhang Heng, Chinese mathematician, astronomer, inventor, and statesman (d. 139)⟶
Zhang Heng's Contributions to Science (79)
AstronomyMathematicsHan DynastyZhang HengCosmology
ChinaChina

📜 Cai Lun Creates Paper

Cai Lun of China invents paper.⟶
Cai Lun Creates Paper (105)
Han DynastyCommunicationWritingCai Lun
ChinaChina

⚙️ Zhang Heng invents the Water-Powered Armillary Sphere

Zhang Heng of China invents the world's first water-powered armillary sphere.⟶
Zhang Heng invents the Water-Powered Armillary Sphere (125)
AstronomyZhang HengHan Dynasty
ChinaChina

🧲 Zhang Heng Develops First Seismoscope

Zhang Heng of China invents first seismometer to detect the cardinal direction of earthquakes.⟶
Zhang Heng Develops First Seismoscope (132)
Scientific InstrumentsSeismologyGeophysicsHan DynastyMeasurement
ChinaChina

🌏 Zhang Heng Invents the First Seismoscope

Seismometer and pendulum in Han dynasty China, built by Zhang Heng. It is a large metal urn-shaped instrument which employed either a suspended pendulum or inverted pendulum acting on inertia, like the ground tremors from earthquakes, to dislodge a metal ball by a lever trip device.⟶
Zhang Heng Invents the First Seismoscope (132)
Han DynastySeismologyInstrumentationZhang HengEarthquake
ChinaChina