WebEratosthenes of Cyrene (/ ɛr ə ˈ t ɒ s θ ə n iː z /; Greek: Ἐρατοσθένης [eratostʰénɛːs]; c. 276 BC – c. 195/194 BC) was a Greek polymath: a mathematician, geographer, poet, astronomer, and music theorist.He was a man of learning, becoming the chief librarian at the Library of Alexandria.His work is comparable to what is now known as the study of … WebNov 24, 2024 · Another imaginary line drawn straight through Earth connecting the North Pole to the South Pole is Earth's axis of rotation. 10. A day is the amount of time it takes …
The Earth is Not a Perfect Sphere - Here
WebCircumference of Earth around the poles (CP): CP = π × D = 3.14 × 7900 = 24,806 miles. Fun Facts. Earth’s shape, caused by the flattening at the poles, is known as an oblate spheroid. So, its diameter at the equator is … WebApr 25, 2024 · 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 … ray ban sunglasses prescription online
How big is Earth? Space
Earth's circumference is the distance around Earth. Measured around the Equator, it is 40,075.017 km (24,901.461 mi). Measured around the poles, the circumference is 40,007.863 km (24,859.734 mi). Measurement of Earth's circumference has been important to navigation since ancient times. The first known … See more Eratosthenes The measure of Earth's circumference is the most famous among the results obtained by Eratosthenes, who estimated that the meridian has a length of 252,000 stadia, … See more • Krebs, Robert E.; Krebs, Carolyn A. (2003). "Calculating the Earth's Circumference". Groundbreaking Scientific Experiments, … See more In 1617 the Dutch scientist Willebrord Snellius assessed the circumference of the Earth at 24,630 Roman miles (24,024 statute miles). Around that time British mathematician See more • Earth radius • Spherical Earth • Nautical mile See more • Carl Sagan demonstrates how Eratosthenes determined that the Earth was round and the approximate circumference See more WebSep 22, 2009 · The Earth’s circumference – the distance around the equator – is 40,075 kilometers around. ... (the equator when you pass through both poles), and the equatorial circumference, you see that ... WebOct 4, 2024 · This article is part of the NASA Knows! (Grades 5-8) series. Earth is our home planet. Scientists believe Earth and its moon formed around the same time as the rest of the solar system. They think that was about 4.5 billion years ago. Earth is the fifth-largest planet in the solar system. Its diameter is about 8,000 miles. ray ban sunglasses price in uae