Register | Login


In the year 132 CE, a brilliant Chinese astronomer, mathematician and engineer named Zhang Heng presented to the Han court an impressive invention—the world’s first seismoscope.

A seismoscope is an instrument that indicates the shaking of the earth during an earthquake. It should not be confused with a seismometer or a seismograph that also records the movement. In essence, any hanging pendulum or a delicately balanced object that can topple at the slightest disturbance will function as a seismoscope. It’s naïve to believe that such instruments didn’t exist before Zhang Heng’s invention. But what makes Heng’s seismoscope special is its sensitivity and its ability to tell the direction where the earthquake came from.

Zhang Heng’s seismoscope.

A replica of Zhang Heng’s seismoscope. Photo credit: Encyclopaedia Britannica


© Amusing Planet, 2019.


Loading...

The Floating Guangji Bridge
The Floating Guangji Bridge
Floating Markets of Southeast Asia
Floating Markets of Southeast Asia
A Statue Dedicated to Sex Workers in Amsterdam
A Statue Dedicated to Sex Workers in Amsterdam
The Rock Garden of Chandigarh
The Rock Garden of Chandigarh
The Story Behind Ukraine’s “Tunnel of Love”
The Story Behind Ukraine’s “Tunnel of Love”
The Toxic Town of Times Beach, Missouri
The Toxic Town of Times Beach, Missouri
Murud-Janjira Fort, India
Murud-Janjira Fort, India
Deepika Padukone Poses for Grazia Magazine April 2016
Deepika Padukone Poses for Grazia Magazine April 2016