You might be surprised to find, however, that the first seismometer was invented in China in 132 AD by a Chinese astronomer, mathematician, engineer, and inventor called Zhang Heng. The instrument was said to resemble a wine jar six feet in diameter, with eight dragons positioned face down along the outside of the barrel, marking the primary compass directions. In each dragon’s mouth was a small bronze ball. 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. The device is said to have been very accurate and could detect earthquakes from afar, and did not rely on shaking or movement in the location where the instrument was positioned. The first ever earthquake recorded by this seismograph was supposedly somewhere in the east. Days later, a rider from there reported this earthquake. Moreover, it had the most wicked ornaments. They don’t make scientific instruments like they used to! Of course, the insides of the seismometer was filled with a sensing mechanism of some sort, the contents of which have been lost in time. In all likelihood, a simple or inverted pendulum was employed, according to experts.
1. A group of people that seeks to influence public policy on the basis of a particular common interest or concern.
2.As a reminder, a political party is a group of people who organize to win elections, operate the government, and determine public policy, whereas an interest group is a group of people who share common goals and who actively try to influence policymakers. ... Their specific purposes within the government, however, differ.
The Federal government would be too weak to do enforce its laws
Europeans trying to colonise America. They brought weapons and diseases with them that the Natives wouldn't have been familiar with.
Before women could work they couldn't be taxed but now they can.
And education cost money which is taken from the money Americans pay taxes for.
