A new treatise on astronomy, and the use of globes : in two parts ... (1866)
M'Intire, James, 1799-1879 · New York : Published by A.S. Barnes & Burr ... · leaf 45
d, which is formed bythe intersection of this planeand the surface of the cone,is called an Ellipse. Again : let the cone be cutby the plane E 0- D, perpen-dicular to the plane ABC,and parallel to the. slant sideA C ; then the curve formedby this plane and tlie surfaceof the cone, is called a… … What have other astronomers since Keplers time, done ? What lasaid of the orbits of many of the comets ? Draw the diagram, and de-licribo the curves called the Three Conic Sections. KEPLER S LAWS. 39
Astronomy
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
