Suggestive Hints Towards Improved Secular Instruction Making It Bear Upon Pract
Suggestive Hints Towards Improved Secular Instruction Making It Bear Upon Pract
Richard Dawes
The book Suggestive Hints Towards Improved Secular Instruction Making It Bear Upon Pract was written by author Richard Dawes Here you can read free online of Suggestive Hints Towards Improved Secular Instruction Making It Bear Upon Pract book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Suggestive Hints Towards Improved Secular Instruction Making It Bear Upon Pract a good or bad book?
What reading level is Suggestive Hints Towards Improved Secular Instruction Making It Bear Upon Pract book?
To quickly assess the difficulty of the text, read a short excerpt:
) If the earth's diameter were only one half what it is, what proportion would the mass, the surface, and the different land divisions of this new globe bear to those of the present one, and what would be the size of each in square miles. The teacher should work this question out numerically to its final results ; it only requires a knowledge of the pro- perties of a circle and of a globe, that the circumferences of circles vary as their diameters, the areas as the squares ; and that the solid ...contents of spheres vary as the cubes of their diameters. Archimedes more than two thousand years ago discovered that the superficies of a sphere is equal to the convex sur- face of the circumscribing cylinder, or to the area of four of its great circles ; and that the solidity of the sphere is to that of its circumscribing cylinder as 2 to 3. He was so 142 SUGGESTIVE HINTS. / pleased with this discovery, that he ordered a sphere in- scribed in a cylinder to be placed on his tomb, and the numbers which express the ratio of these solids.
User Reviews: