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.
Answer:
They help us determine if the system meets our needs.
Explanation:
Describe the seven major goals of the United States economy. They are: economic freedom, efficiency, equity, security, full employment, price stability, and growth.
The answer to this question is <span>Tesla released all their patents to help the electric car industry .
By releasing the patent, now Tesla has opened up a chance for other experts to analyze Tesla's design and imporve the chance of new discovery for that certain product. This will definitely make a lot of potential improvements for electric cars in the future even though Tesla will not has the sole ownership of it.
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Answer:
Informed Consent
Explanation:
Informed consent under APA guidelines addresses the need for all participants to know before hand what their participation will involve and what risks might develop. The guideline also states that the participants also retain the right to withdraw from the study before or after informed consent, at any time and for any reason.
