EVERY1 who said a different answer is WRONG! The true answer is Ferdinand Magellan discovered the earth was round. I know this is right because I asked my world history teacher and he said that Ferdinand Magellan and his sailsman crew were the people that discovered this. YOUR WELCOME! :)
-Emma
The first people to calculate the size of the Earth and the Earth-Moon distance were the ancient Greek mathematician and astronomer, Eratosthenes, and the ancient Greek astronomer and mathematician, Hipparchus.
The first person credited with accurately calculating the Earth's circumference was the ancient Greek mathematician and astronomer Eratosthenes in the 3rd century BC. He did so by measuring the angle of the sun's rays at two different locations and using simple geometry to estimate the Earth's size.
Erastosthes was the first person to attempt to figure out the size of the earth, and although he was not exact, he was very close for his time. He lived in the third Century BC
Erasthothenes
The first person credited with measuring the Earth's circumference was the ancient Greek mathematician and astronomer Eratosthenes. He used the angle of the shadow cast by a vertical stick in Syene and Alexandria to estimate the Earth's size with impressive accuracy for his time.
Gauges to allow a person to calculate nut bolt size are widely available. Measuring the thread manually can be unreliable so it is far preferable to use a gauge.
Scientists use a variety of methods to calculate the size, shape, and composition of the Earth. This includes measurements taken from satellites, seismic studies, gravitational field measurements, and observations of the Earth's rotation and orbital motion. By combining data from these different sources, scientists can develop a comprehensive understanding of Earth's properties.
Eratosthenes
Eratosthenes
Due to the mass or size of Pluto compared to Earth, about 2/3 the size of our moon, the gravitational pull of Pluto is greatly weaker than Earth's.
To calculate the size of the nested PCR product, you would first determine the size of the first PCR product by adding the sizes of the primers and the DNA template. Then use the first PCR product size as the template size for the second PCR reaction, adding the sizes of the second set of primers to estimate the final nested PCR product size. Keep in mind that any additional flanking regions may also contribute to the final product size.
How to calculate spanner size regarding bolts and nuts