# Practical Work in Elementary Astronomy by M.G.J. Minnaert

By M.G.J. Minnaert

X

Similar astronomy & astrophysics books

Interstellar Matter, Galaxy, Universe

Astronomy and Astrophysics have been first handled in quantity III of the sixth version of Landolt-Börnstein in 1952, then in volumes VI/1 and VI/2 of the hot sequence, 1965 and 1981/82 respectively. the current quantity VI/3 is yet another supplementation of quantity VI/1. The decimal category scheme of the 1st complement volumes, VI/2, has been maintained, fields with no major new advancements are sincerely indicated.

Babylonian Mathematical Astronomy: Procedure Texts

This publication includes new translations and a brand new research of the approach texts of Babylonian mathematical astronomy, the earliest recognized kind of mathematical astronomy of the traditional global. The translations are in keeping with a latest procedure incorporating fresh insights from Assyriology and translation technological know-how.

If the Universe Is Teeming with Aliens ... WHERE IS EVERYBODY?: Seventy-Five Solutions to the Fermi Paradox and the Problem of Extraterrestrial Life

Given the truth that there are probably four hundred billion stars in our Galaxy by myself, and maybe four hundred billion galaxies within the Universe, it stands to cause that someplace in the market, within the 14-billion-year-old cosmos, there's or as soon as used to be a civilization at the very least as complex as our personal. The sheer enormity of the numbers virtually calls for that we settle for the reality of this speculation.

Extra resources for Practical Work in Elementary Astronomy

Sample text

LST clock, clock correction. Demonstration Passage of a star, observed by a meridian instrument. Al2. REDUCTION TO THE MERIDIAN The Problem Any meridian instrument deviates a little from the theoretical position however small the deviation may be. We want to find the three main constants by which this deviation is determined: the azimuth constant, the level constant, and the collimation constant. Procedure 1L, 2S. Follow the programme, described in A sections 3 and 4, and determine the transit time of a star.

For each pair: altimeter or experimental telescope; flashlight; Star Atlas; Astronomical Ephemeris. Astronomical clock, giving UT. Note. If we wish to measure the elevation of the sun, we can apply a much more precise method. We set up an artificial horizon: a piece of dark glass, minimum size 10 cm x 10 cm. Adjust it by means of a water-level and small wooden wedges or pieces of paper till it is horizontal. With the sextant we measure the angle between the sun and its reflection in the glass, which is twice the altitude above the horizon.

3. Draw again the path of the star in the course of the year. You find a curve which is roughly circular. Determine approximately the radius. 4. Bradley hoped to discover the parallax of the star. Consider whether the path 0 p 21Sept. Fig. 26. 47 PRECESSION, ABERRATION, NUTATION which we found might be explained by this effect. Assume very roughly that y Dra is located near the pole E of the ecliptic (a=lS h ,b=66°); because of the parallax it would describe a small circle, corresponding to the circular motion of the earth (Figure 26).