จานสะท้อนแบบพาราโบลา (Thai Wikipedia)

Analysis of information sources in references of the Wikipedia article "จานสะท้อนแบบพาราโบลา" in Thai language version.

refsWebsite

Global rank Thai rank

1telescopemaking.org

low place

low place

916^th place

794^th place

telescopemaking.org

telescopemaking.org The Basics of Telescope Testing - Mathematical Details "A spherical mirror takes light rays which emanate from a single point (called the center of curvature and send them back exactly to that point. If stars were that close, a spherical mirror would be ideal, but real stars are a good deal further away, in fact, for all practical purposes, stars are located at an infinite distance."

utexas.edu

farside.ph.utexas.edu

farside.ph.utexas.edu - Spherical Mirrors, by Richard Fitzpatrick 2007-07-14 "Since the path of a light-ray is completely reversible, it follows that a light source placed at the focus $F$ of a parabolic mirror yields a perfectly parallel beam of light, after the light has reflected off the surface of the mirror."