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scientists use an atom of helium and look at the # of rotations of the electrons around the nucleus. and they determine the second from that

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Why do scientists take measurements?

Scientists take measurements to quantify and understand the observable world. By measuring various properties such as mass, temperature, and time, scientists can gather data to support or refute hypotheses, make predictions, and draw conclusions about natural phenomena. Measurements are crucial for the advancement of knowledge and the development of scientific theories.


What is a fundamental measurement?

A fundamental measurement is a basic, universally accepted unit of measurement that serves as a building block for other measurements. These measurements are typically defined in terms of natural phenomena or constants and are used as reference points for comparing other measurements. Examples include the meter for length, the kilogram for mass, and the second for time.


What is longer a mile or an hour?

Neither. These are measurements of two different concepts (distance and time), and do not have any basis for comparison.


Why is geography unique?

Because geography is a subject that deals with the natural and human phenomena and changes over time and also bridges the natural and social science


What natural phenomena occurred around the time of the Battle of Hastings in 1066?

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What types of natural phenomena could serve as time standards?

Any natural phenomenon that repeats itself after exactly same time interval can be used as a measure of time. for example:- Rotation of earth around the sun provides us the natural phenomena.


Why did the nuclear arms race develop in the twentieth century?

Because that was the century in which the natural phenomena required were discovered and the political climate of the time.


Which myths are fake?

Myths are commonly not considered "fake" as they are traditional stories that may not have a basis in reality. They often serve to explain natural phenomena or convey moral lessons. However, some myths may be based on false information or misinterpreted over time.


How the manner in which people observe natural phenomena has changed over time?

Through the years,observation of man on the different natural phenomena has greatly changed and developed because of the advanced technology we have now.Compared to earlier times,access to instruments for observation has become easier today due to the inventions of different people.


A theory that stands the test of time and becomes the basis for a field of study?

The theory of evolution by natural selection, proposed by Charles Darwin, has stood the test of time and has become the basis for the field of evolutionary biology. This theory explains how species evolve and adapt to their environments over time through genetic variations and natural selection, shaping the diversity of life on Earth.


How do scientist investigate natural phenomena?

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Who discovered time and date?

The concept of time and date was not discovered by a single person. It has been developed over thousands of years by various civilizations and cultures through the study of astronomy, mathematics, and the observation of natural phenomena.