When was seismograph invented

Additionally, in , the United States formed a national system within the National Science Foundation to continually monitor and research earthquakes. Today, even though it's known that footsteps aren't the cause of the Earth's tremors, much is yet to be discovered about their large influence on the planet. Therefore, seismographs continue to be an important tool used to study these earth-rattling quakes. Toggle navigation.

Seismograph - History of Seismograph. Seismograph When the Earth shook in the ancient world, the Maimas from Peru believed that their god had come for a visit. It is widely used throughout the world today.

The Press-Ewing seismograph uses a Milne pendulum, but the pivot supporting the pendulum is replaced by an elastic wire to avoid friction. The Early History of Seismometry This is an excellent full history of the seismograph. FREE Newsletter. Sign Up Now! Important disclaimer information about this About site. Depression Self-Test Vitamins for Depression? Most Popular Articles. Latest Articles. See Online Courses. All Topics Email Article.

All rights reserved. Inventors Seismograph Chang Heng invented the first seismoscope called the dragon jar In the history of the innovations surrounding earthquake study, we have to look at two things: the devices that recorded earthquake activity and the measurement systems written to help interpret that data.

Now, instruments are carefully calibrated with respect to each other. Thus, magnitude can be computed using the Richter Scale from the record of any calibrated seismograph. Actively scan device characteristics for identification. Use precise geolocation data. Select personalised content. Create a personalised content profile. Measure ad performance.

Select basic ads. Create a personalised ads profile. Select personalised ads. Apply market research to generate audience insights. Measure content performance. Develop and improve products. List of Partners vendors. Share Flipboard Email. Mary Bellis. Inventions Expert. Mary Bellis covered inventions and inventors for ThoughtCo for 18 years.

So much spectacular human ingenuity was poured into the various Chinese royal courts and then forgotten. That's the way it was with seismography. Some of them, like the great earthquake of , were just awful.

It killed , people. Down through the millennia, the Chinese have left very good records of those disasters. So it was that Chang Heng, astronomer royal to the Han Dynasty, invented an accurate seismograph in AD -- years before anyone in the West did.

It was a large bronze urn with eight dragon heads gazing outward in eight directions. Each dragon held a ball in his mouth. Around the base of the urn, under each dragon, sat a frog with his mouth open.