Circumference Of The Earth's Orbit

What Is The Circumference Of The Earth?

"Eratosthenes Teaching in Alexandria" by Bernardo Strozzi — "Eratosthenes Didactics in Alexandria" by Bernardo Strozzi

What Is The Circumference Of The World?

The circumference of the Earth is forty,075 km, and the Greek geographer Erastosthenes was the first person to estimate the World'southward circumference nearly accurately. Before Erastosthenes, other scholars had attempted to approximate the figure, but their methods were not recorded, and their estimations were far from accurate. With developments in technology, earth's measurements, including the circumference have been accurately measured.

Erastosthenes' Measurement

Erastosthenes of Cyrene (present-day Libya) was a renowned Mathematician and geographer in Athens and Egypt. Having been well educated in Athens, he went to Arab republic of egypt on the invitation of Ptolemy Three, becoming the chief librarian of the Library of Alexandria. Erastosthenes' curiosity on the circumference of the Earth began with a text detailing the unusual summer solstice which had occurred in Syene, Arab republic of egypt, where sunlight would shine straight overhead, and no shadows would stalk from the column. He observed that at the same time in Alexandria, the cavalcade had shadows. It was from these observations that he was able to deduce that the Earth is curved and summate the first estimate of the Earth's circumference.

Armed with the relevant mathematical equations, he set out to decide the distance from Alexandria to Syene using stadia. Because of the uncertainty of stadia and limited technology, his measurement was slightly off the mark just was astoundingly accurate for his time. Erastosthenes, along with his other accomplishments, is credited with introducing the geography discipline and his contributions to mathematics.

Earth'south Measurements

With a circumference of forty,075 km, Globe is the fifth largest of the planets in the Solar System. The meridional circumference that is from pole to pole is xl,008 km. The difference is caused past the flattening of the poles, such that the Earth has an oblate spheroidal shape. Globe's rocky mantle and metal core brand it the densest planet, at v.513 grams per cubic centimeter. World's volume is estimated at one trillion cubic kilometers.

World'southward surface expanse is an estimated 510 km2, and about 29% of the expanse is land while the other 71% consists of h2o. The limerick of the Globe'south atmosphere is 78% of nitrogen and 21% oxygen.

Lowest And Highest Elevations On Earth

Ascension to 29,029 feet (8,848 meters) is the highest meridian above sea level on earth, Mt Everest in Asia. The near distant point from the Globe's center is the Chimaborazo Mount in Ecuador at vi, 267 meters (20,561 feet). The pinnacle is the uttermost point from the center of the Earth because of the oblate shape of Earth and its proximity to the equator. The lowest elevation on land is the Dead Sea, at 1,369 anxiety (417.27 meters) below body of water level. The Pacific Ocean's Mariana Trench is the lowest point in water at xi, 034 meters (36,200 feet) below body of water level.

Other Facts About The Earth

The circumference of Earth varies depending on the method used to measure it. The measurement around the equator and from pole to pole differs because Earth is not a perfect sphere rather it bulges at the equator and flattens at the poles.

Earth, different other planets, has merely ane moon while a total of 166 moons in the solar arrangement have been identified.

Earth rotates around the n-due south path one time in approximately 24 hours. The 24 hours course the basis of the clock organisation used worldwide. Earth moves in an apparent diurnal motion, where at a fixed position in the earth, the sky rather than Globe appears to be rotating.