Earth's circumference is the distance around Earth. Measured around the equator, it is 40,075.017 km (24,901.461 mi). Measured passing through the poles...

Celestial Bodies, Cleomedes credited him with having calculated the Earth's circumference around 240 BC, with high accuracy. Eratosthenes believed there was...

was correct: the Earth is flattened at the poles due to rotation's centrifugal force. Earth's circumference Earth mass Effective Earth radius Geodesy Geographical...

Earth is an archaic and scientifically disproven conception of the Earth's shape as a plane or disk. Many ancient cultures subscribed to a flat-Earth...

compared to the actual circumference of 24,901 mi (40,074 km). Posidonius was informed in his approach to finding the Earth's circumference by Eratosthenes,...

of the Earth that does not distort either the shape or the size of large features – land masses, bodies of water, etc. The Earth's circumference is quite...

be the Earth's circumference, r  its radius, Δc  the added string length and Δr  the added radius. As a circle of radius R  has a circumference of 2πR ...

established the roughly spherical shape of Earth as a physical fact and calculated the Earth's circumference. This knowledge was gradually adopted throughout...

water. Almost all of Earth's water is contained in its global ocean, covering 70.8% of Earth's crust. The remaining 29.2% of Earth's crust is land, most...

presumption of a spherical Earth, an expedition commissioned by caliph al-Ma'mun used this fact to calculate Earth's circumference to within 7,920 kilometres...

claims to be about 7°, or 1/50th the circumference of a circle. Taking the Earth as spherical, the Earth's circumference would be fifty times the distance...

time Earth has traveled 940 million km (584 million mi). Ignoring the influence of other Solar System bodies, Earth's orbit, also known as Earth's revolution...

Earth's rotation or Earth's spin is the rotation of planet Earth around its own axis, as well as changes in the orientation of the rotation axis in space...

times Earth's diameter or 9.5 times Earth's circumference. Around 389 lunar distances make up an AU astronomical unit (roughly the distance from Earth to...

compute the Earth's circumference, which was close to modern values of the Earth's circumference. His estimate of 6,339.9 km for the Earth radius was only...

and shape of the Earth. The simplest model for the shape of the entire Earth is a sphere. The Earth's radius is the distance from Earth's center to its surface...

minute (1/60 of a degree) of latitude at the equator, so that Earth's polar circumference is very near to 21,600 nautical miles (that is 60 minutes × 360...

from the equator to the North Pole along a great circle, so the Earth's polar circumference is approximately 40000 km. In 1799, the metre was redefined in...

units are the quad, equal to 107 m (approximately a quadrant of the Earth's circumference), the eleventhgram, equal to 10−11 g, and the second. These were...

of ancient texts. For example, the error in the calculation of Earth's circumference by Eratosthenes or Posidonius is dependent on which stadion is chosen...

effect of 0.0001 m. The shape of the Earth is a slightly flattened sphere, which results in the Earth's circumference being 0.168% larger when measured around...

September 23) the subsolar point crosses Earth's equator at a shallow angle, sunlight shines perpendicular to Earth's axis of rotation, and all latitudes have...

Freeman and Company. p. 70. ISBN 0-7167-4361-2. How Aryabhata got the earth's circumference right Archived 15 January 2017 at the Wayback Machine S. Balachandra...

effect on each other and applied also to human life. He measured the Earth's circumference by reference to the position of the star Canopus. His measure of...

included in the book were corrections to calculations of the circumference of the Earth, the Earth's axial tilt, and the apsides of the Sun and the Moon. Though...

estimations of the Earth's circumference and Afro-Eurasia's size, which he found spanned only two-fifths of the Earth's circumference, and his discovery...

estimations of the Earth's circumference and Afro-Eurasia's size, which he found spanned only two-fifths of the Earth's circumference, reasoning that the...

estimations of the Earth's circumference and Afro-Eurasia's size, which he found spanned only two-fifths of the Earth's circumference, reasoning that the...

not acknowledge [Earth's] sphericity and even know its approximate circumference". Historian Jeffrey Burton Russell says the flat-Earth error flourished...

though its magnitude seems to differ over periods — for example, the Earth's circumference is 3,200 yojanas according to Varahamihira and slightly less so...