There is a pen hanging from a metal thing and a piece of paper rolled up into something like a tape. The tape-like thingie (called a rolling drum) spins around. When an earthquake happens the pen moves and it shows on the paper.
to detect earthquakes
records the derection and force of an earthquake done by: tavina harper
Here are some sentences.Scientists use a seismograph to measure movement in the earth.The seismograph showed that an earthquake had occurred.
A seismograph is an instrument used for recording the intensity and duration of an earthquake/tremor.This device is not only used for earthquakes but also for other seismic events. For example monitoring the vibrations produced during construction work and during blasting in the mining and quarrying industries.The seismograph was invented by John Milne who was an English seismologist and geologist.
what is the market value for seismograph
First
A seismograph was created to measure out the magnitude of earthquakes.
the purpose of the seismograph is that it tells you when a earthquake is coming. :)
Humorous answer: A seismograph never answers; it just waves.
seismograph is called 'bhukamplekhi' in hindi
A seismograph is used to detect and record seismic waves caused by earthquakes or other sources of ground vibrations. It measures the amplitude and duration of these waves to help seismologists monitor and study seismic activity around the world.
how the seismograph change over time