Sentence Examples


  • Ordinary meteors, in the region of the earth's orbit, appear to be separated by intervals of about 250 m.
  • Encke, the astronomer who first investigated its orbit and showed its periodicity.
  • It is now known to correspond to the actual orbit of the planet round the sun.
  • Another element is the time of revolution of the body in its orbit, called its period.
  • If a point be in motion in any orbit and with any velocity, and if, at each instant, a line be drawn from a fixed point parallel and equal to the velocity of the moving point at that instant, the extremities of these lines will lie on a curve called the hodograph.