spherical trigonometry
spherical trigonometry Branch of mathematics that deals with the sides, angles and areas of spherical triangles, that is, portions of the surface of a sphere bounded by three arcs or great circles. See also trigonometry
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Great Circle , great circle A line on the surface of a sphere representing the circumference of a circle whose centre is coincident with the centre of that sphere.… Sphere , sphere / sfi(ə)r/ • n. 1. a round solid figure, or its surface, with every point on its surface equidistant from its center. ∎ an object having this… Mobius Strip , Mobius strip
Möbius strip
A Möbius strip is a twisted surface in space that is made by starting with a strip of paper, twisting one end through 180°,… Plane (mathematics) , plane1 / plān/ • n. 1. a flat surface on which a straight line joining any two points on it would wholly lie: the horizontal plane. ∎ an imaginary fl… Psychrometer , psychrometer A hygrometer that has a wet-bulb and a dry-bulb thermometer. See also whirling psychrometer.
psychrometer Hygrometer with a wet-bulb and… Eugenio Beltrami , Beltrami, Eugenio
Beltrami, Eugenio
mathematics.
Beltrami was born into an artistic family: his grandfather. Giovanni, was an engraver of precious st…
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spherical trigonometry