Inferior conjunction, when an interior planet is between the earth and the sun.
Jupiter, apparent path of, in 1866, [112]; elements of, [164]; satellites of, [165]; positions of satellites, [166]; elements of satellites, [166]; the Jovian system, [167].
Kepler's Laws—1st, that the orbits of planets are ellipses, having the sun or central body in one of the foci; 2d, the radius-vector passes over equal spaces in equal times; 3d, the squares of the periodic times of the planets are in proportion to the cubes of their mean distances from the sun.
Latitude, the angular distance of a heavenly body from the ecliptic.
Light, the child of force, [17]; number of vibrations of, [18], [25]; velocity of, [22]; undulatory and musical, [26]; chemical force of, [30]; experiments with, [37]; approach and departure of a light-giving body measured, [51]; aberration of, [199].
Limb, the edge of the disk of the moon, sun, or a planet.
Longitude. If a perpendicular be dropped from a body to the ecliptic, its celestial longitude is the distance of the foot of the perpendicular from the vertical equinox, counted toward the east; mode of ascertaining terrestrial, [72].
Magellanic clouds, [208].
Mars, [159]; snow spots of, [160]; satellites of, [161].
Mass, the quantity of matter a body contains.