English-Thai Dictionary
analemma
N เครื่องวัด มุม เอียง ของ ดวงอาทิตย์ krueng-wad-mum-iang-kong-duang-ar-tid
Webster's 1828 Dictionary
ANALEMMA
n.[Gr. altitude. ] 1. In geometry, a projection of the sphere on the plane of the meridian, orthographically made by straight lines, circles and ellipses, the eye being supposed at an infinite distance, and in the east or west points of the horizon.
2. An instrument of wood or brass on which this kind of projection is drawn, with a horizon and cursor fitted to it, in which the solstitial colure, and all circles parallel to it, will be concentric circles; all circles oblique to the eye will be ellipses; and all circles whose planes pass through the eye, will be right lines.
Webster's 1913 Dictionary
ANALEMMA
An `a *lem "ma, n. Etym: [L. analemma a sun dial on a pedestal, showing the latitude and meridian of a place, Gr.
1. (Chem. )
Defn: An orthographic projection of the sphere on the plane of the meridian, the eye being supposed at an infinite distance, and in the east or west point of the horizon.
2. An instrument of wood or brass, on which this projection of the sphere is made, having a movable horizon or cursor; -- formerly much used in solving some common astronomical problems.
3. A scale of the sun's declination for each day of the year, drawn across the torrid zone on an artificial terrestrial globe.
The Wordsmith Dictionary