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.


Neetu Chandra at Rebecca Dewan Collection Preview
Neetu Chandra at Rebecca Dewan Collection Preview
Neetu Chandra Cute Images
Neetu Chandra Cute Images
Neetu Chandra Designer Collection Launch Event
Neetu Chandra Designer Collection Launch Event
Neetu Chandra Hot Images
Neetu Chandra Hot Images
Neetu Chandra Looks Mesmerizingly Gorgeous in Black Dress
Neetu Chandra Looks Mesmerizingly Gorgeous in Black Dress
Neetu Chandra sizzle in Yoga
Neetu Chandra sizzle in Yoga
Neha Bhasin Lent Vocal For Sultan Romantic Track
Neha Bhasin Lent Vocal For Sultan Romantic Track
Neha Deshpande Images
Neha Deshpande Images