latus rectum


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Related to latus rectum: Conic sections, directrix

latus rectum

(ˈlɑːtəs ˈrɛktəm)
n, pl latera recta (ˈlætərə ˈrɛktə)
(Mathematics) geometry a chord that passes through the focus of a conic and is perpendicular to the major axis
[C18: New Latin: straight side]
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References in periodicals archive ?
It is also a remarkable fact that the dog's path is that section of the parabola lying above the latus rectum.
The procedure for Method A is as follows: (1) find the interval from the Autumnal Equinox to the Vernal Equinox; (2) the planet's period of revolution; (3) evaluate the interval from the perihelion to the first crossing of the latus rectum; (4) evaluate the interval from the perihelion to the aphelion; (5) set the ratio of (1) to (2) equal to the ratio of (3) to (4); and finally, (6) solve the resulting transcendental equation graphically to yield the eccentricity.