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What was a seismograph used for in ancient China?

What was a seismograph used for in ancient China?

His seismometer, the first known instrument built to detect earthquakes, was important, because devastating quakes happened in many remote regions of China. So a detection device helped the emperor know when and where to send timely aid from the capital.

What is a seismograph Han Dynasty?

The Dragon & Toad Seismograph was invented in 132 AD. It was invented in Ancient China during the Han Dynasty by Zhang Heng, the director of astrology in the late Han court. It was invented to keep track of the earthquakes that occurred in China. The seismograph is used for locating earthquakes.

How did the ancient China earthquake detector work?

Beneath the dragons sat eight bronze toads, with their broad mouths gaping to receive the balls. When the instrument sensed an incoming seismic wave, one of the balls would drop and the sound would alert observers to the earthquake, giving a rough indication of the earthquake’s direction of origin.

When did Zhang Heng invent the seismometer?

In 132 AD, Chinese astronomer Zhang Heng created a seismometer, a device that detects the ground’s movement during an earthquake.

How did the seismoscope help the Han dynasty?

People in the Han Dynasty’s capital city of Luoyang, 1,000 miles away, did not feel the shock. However, the seismoscope alerted the emperor’s government to the fact that a quake had struck somewhere to the west.

Why was the seismometer important to ancient China?

His seismometer, the first known instrument built to detect earthquakes, was important, because devastating quakes happened in many remote regions of China. So a detection device helped the emperor know when and where to send timely aid from the capital. The bronze device featured eight metal dragons attached to what looked like a big coffee urn.

How is a seismometer like a weight hanging from a spring?

A simple seismometer, sensitive to up-down motions of the Earth, is like a weight hanging from a spring, both suspended from a frame that moves along with any motion detected.