12 minutes ago2000-year-old earthquake instrument accurate today
Periskopi(7 years ago)
(7 years ago)In 132 C.E., a scholar from China named Zhang Heng presented King Han's first seismoscope to the court in the world. The modern - day reconstruction of this device measures earthquakes with high accuracy. The instrument is made up of a metal vase that is hung by a heavy iron in shape [...]
The instrument is made up of a metal vase that has a weighted iron hanging within it. This iron is linked to eight dragon - headed blossoms that are located around - eight different directions.
A metal dice has been placed on each of the dragon's heads. Under each head is a carved frog with its mouth open. As soon as the earthquake strikes, the inside pendulum moves. His movement pushes the heads of the dragon, which bend and cause the sphere to fall and be cut off by the frogs below.
The instrument can also be activated with minute vibrations and can detect the power and direction of the earthquake, judging which head of the dragon has left the sphere.
Today, seismologists have technology alongside them, and measurements are done in various ways. One of the latest methods is the use of optic fibers. However, all these measurements are done during the quake, and the results follow. To calculate before the earthquake strikes is still impossible.
