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curvature
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The curvature at each point of a line is defined to be 1/r, where r is the radius of the osculating, or “kissing,” circle that best approximates the line at the given point. The normal, or perpendicular, at each point of a surface defines the corresponding tangent plane, and vice versa. curved space-time intrinsic curvature of a surface
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Eye. Eyelash. Eyeball. Vision.
7 Vestigial Features of the Human Body
Cleopatra hieroglyphic carving the Ancient Egyptian queen Cleopatra. Wall of the Temple of Horus at Edfu, Egypt.
What Did Cleopatra Look Like?
Bog body. Head of Tollund Man. Died at about age 30-40, Dated to about 280 BCE early Iron Age. Found Bjaeldskovdal bog Denmark in 1950 near Elling Woman. Most well preserved bog body to date. Human remains mummified in natural peat bogs. mummy, embalm
9 Noteworthy Bog Bodies (And What They Tell Us)
Christmas tree, holiday, pine
How Did the Tradition of Christmas Trees Start?
American bison (Bison bison) also known as buffalo or plains buffalo on the prairie, western U.S.
What’s the Difference Between Bison and Buffalo?
Black widow spider
9 of the World’s Deadliest Spiders
Mount Everest (Mt. Everest, mountains, Himalayas).
Is Mount Everest Really the Tallest Mountain in the World?

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Photos

The curvature at each point of a line is defined to be 1/r, where r is the radius of the osculating, or “kissing,” circle that best approximates the line at the given point.
The normal, or perpendicular, at each point of a surface defines the corresponding tangent plane, and vice versa.
curved space-time
intrinsic curvature of a surface
See All Images →

Related Topics and References

Topics

Key People

Gaspard Monge, detail of an oil painting by Jean Naigeon, 1811; in the Museum of Fine Arts, Beaune, France.
Gaspard Monge, count de Péluse
French mathematician and public official