it help tell the direction of where it came from and the slightest movement will make the ball fall if you are referring to the ancient china one
The earthquake detector, also known as a seismometer or seismograph, was developed in ancient China around 132 AD by the polymath Zhang Heng. His device, called the seismoscope, was designed to detect and indicate the direction of earthquakes. Modern earthquake detectors have evolved significantly and are now produced in various countries around the world, utilizing advanced technology for precise measurements.
Seismograph
Zhang Heng was the firts to invent the earthquake weathercock in 132 A.D.
the Chinese gave us matchs,rockets,fireworks,gunpowder,crossbow,wheelbarrow,compass,paper,the propeller,seismoscope (a earthquake detector),last the the coin.this is all I know.
I could not find one
After pangea, the ancient super-continent, spread out.
Lin Yong Ming III
There are two things, Ancient Scroll and the key. Use the metal detector to find the key.
everyone can now locate an earthquake and how big it was
The building's ancient structure could crumble if there was an earthquake.
just to name a few: paper fireworks gunpowder printer silk wheelbarrow cast iron seismograph (earthquake detector) matches boat rudder abacus spinning wheel printed books compass umbrella ink paper money The four most important were: compass, gunpowder, papermaking and printing.
A level 100 Rhyperior that knows horndrill and earthquake