Web6 dec. 2024 · Sirius A has a radius of about 740.000 mi / 1.2 million km, being 71% larger than the radius of the Sun. Sirius B has a radius around 3.650 mi / 5.900 km, thus being slightly smaller than Earth. Sirius A has a diameter of about 1.5 million mi / 2.4 million km, almost 171% of the Sun’s diameter. WebAbu Arrayhan Muhammad ibn Ahmad al-Biruni. A Persian mathematician who lived from 973 to 1048 AD, Al-Biruni used triangulation to measure the earth. His estimate was that the earth had a radius of 6,339.6 km, which is 16.8 km less, also approximately 0.27% off from modern measurements.
Earth - National Geographic Society
Web12 apr. 2024 · January 2024: The Next Full Moon is the Wolf or Ice Moon. Ocean Worlds Resources. NASA Telescope Takes 12-Year Time-Lapse Movie of Entire Sky. nasa.gov. Testing, Testing: Space-Bound US-European Water Mission Passes Finals. nasa.gov. First of NASA's SunRISE SmallSats Rolls Off Production Line. nasa.gov. Earth radius (denoted as R🜨 or $${\displaystyle R_{E}}$$) is the distance from the center of Earth to a point on or near its surface. Approximating the figure of Earth by an Earth spheroid, the radius ranges from a maximum of nearly 6,378 km (3,963 mi) (equatorial radius, denoted a) to a minimum of nearly 6,357 … Meer weergeven Earth's rotation, internal density variations, and external tidal forces cause its shape to deviate systematically from a perfect sphere. Local topography increases the variance, resulting in a surface of profound complexity. … Meer weergeven The following radii are derived from the World Geodetic System 1984 (WGS-84) reference ellipsoid. It is an idealized surface, and the Earth measurements used to … Meer weergeven The Earth can be modeled as a sphere in many ways. This section describes the common ways. The various radii derived here use the notation and dimensions noted above for the Earth as derived from the WGS-84 ellipsoid; namely, Equatorial … Meer weergeven Earth's diameter is simply twice Earth's radius; for example, equatorial diameter (2a) and polar diameter (2b). For the WGS84 ellipsoid, that's respectively: • 2a = 12,756.2740 km (7,926.3812 mi), • 2b = 12,713.5046 km (7,899.8055 mi). Meer weergeven Geocentric radius The geocentric radius is the distance from the Earth's center to a point on the spheroid surface at geodetic latitude φ: Meer weergeven The mathematical expressions above apply over the surface of the ellipsoid. The cases below considers Earth's topography, above or below a reference ellipsoid. As such, they are topographical geocentric distances, Rt, which depends not only on latitude. Meer weergeven The first published reference to the Earth's size appeared around 350 BC, when Aristotle reported in his book On the Heavens that mathematicians had guessed the circumference of the Earth to be 400,000 stadia. Scholars have interpreted Aristotle's … Meer weergeven green county model railroad show
Online calculator: Earth Radius by Latitude (WGS 84)
Web26 sep. 2024 · Earth's polar radius is 3,950 miles (6,356 km) — a difference of 13 miles (22 km). How many meters is the earth's radius? 6,371,000 metersThe value, symbolized rearth, is equal to approximately 6,371,000 meters (6.371 x 106 m). WebHaberreiter, Schmutz & Kosovichev (2008) [4] determined the radius corresponding to the solar photosphere to be 695,660 ± 140 kilometres (432,263 ± 87 miles). This new value … Web7 aug. 2024 · 24,901 milesUsing those measurements, the equatorial circumference of Earth is about 24,901 miles (40,075 km). However, from pole to pole — the meridional … flow yha