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 km … See more 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. Our … See more The following radii are derived from the World Geodetic System 1984 (WGS-84) reference ellipsoid. It is an idealized surface, and the … See more 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 … See more 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). See more Geocentric radius The geocentric radius is the distance from the Earth's center to a point on the spheroid surface at geodetic latitude φ: where a and b are, respectively, the equatorial radius … See more The mathematical expressions above apply over the surface of the ellipsoid. The cases below considers Earth's topography, above or below a See more 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 figure to … See more WebApr 3, 2024 · Distance from Earth Minimum (106km) 38.2 Maximum (106km) 261.0 Apparent diameter from Earth Maximum (seconds of arc) 66.1 Minimum (seconds of arc) 9.7 Maximum visual magnitude -4.8 …

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WebOct 24, 2003 · Earth – 3,959mi (6,371km) radius. Mars – 2,106mi (3,390km) radius; about half the size of Earth. Jupiter – 43,441mi (69,911km) radius; 11x Earth’s size. Saturn – 36,184mi (58,232km) … WebJan 31, 2024 · Yes, but only in excellent conditions. From the Cliffs of Dover, with a height of about 100 m, your horizon would be at 35.7 km. You can calculate this distance with this formula, where h is your elevation and r Earth's radius: a = √[(r + h)² - r²] Since the narrowest part of the Channel is barely 33 km, you can see France, but by a hair's ... how much is sleeping pills in philippines

Radius of Earth - adda247

WebThe calculator below calculates Earth radius at a given latitude. In fact, of course, it calculates the radius of WGS 84 reference ellipsoid at a given latitude, and if you want … WebOct 22, 2024 · The diameter of a circle is twice the radius, giving us a diameter for Earth of 12,756 km. Note: The Earth is almost, but not quite, a perfect sphere. Its equatorial … WebThe calculator below calculates Earth radius at a given latitude. In fact, of course, it calculates the radius of WGS 84 reference ellipsoid at a given latitude, and if you want some theory recap, you can find it below the calculator. Earth Radius by Latitude (WGS 84) Latitude N S Calculation precision Digits after the decimal point: 3 Calculate how do i find my taxonomy number