PDF Books in Children's Science & Nature
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The Story of the Heavens
by Robert S. BallThe Story of the Heavens" is the title of our book. We have indeed a wondrous story to narrate; and could we tell it adequately it would prove of boundless interest and of exquisite beauty. It leads to the contemplation of grand phenomena in nature and great achievements of human genius.The history of Astronomy is, in one respect, only too like man..
The Machinery of the Universe - Mechanical Conceptions of Physical Phenomena
by Amos Emerson DolbearFor thirty years or more the expressions “Correlation of the Physical Forces” and “The Conservation of Energy” have been common, yet few persons have taken the necessary pains to think out clearly what mechanical changes take place when one form of energy is transformed into another.Since Tyndall gave us his book called Heat as a Mode of Motion nei..
The Uses of Astronomy
by Edward EverettThe undersigned ventures to put forth this report of Mr. Everett's Oration, in connection with a condensed account of the Inauguration of the Dudley Observatory, and the Dedication of the New State Geological Hall, at Albany,—in the hope that the demand which has exhausted the newspaper editions, may exhaust this as speedily as possible; not that h..
Time and Tide - A Romance of the Moon
by Robert S. BallTime and Tide: A Romance of the Moon is an astronomical lecture by Robert S. Ball. Preface of the Author:Having been honoured once again with a request that I should lecture before the London Institution, I chose for my subject the Theory of Tidal Evolution. The kind reception which these lectures received has led to their publication in the p..
A Brief History of Element Discovery, Synthesis, and Analysis
by Glen W. WatsonA Brief History of Element Discovery, Synthesis, and Analysis written by Glen W. Watson.It is well known that the number of elements has grown from four in the days of the Greeks to 103 at present, but the change in methods needed for their discovery is not so well known. Up until 1939, only 88 naturally occurring elements had been discovered...
Ancient and Modern Physics
by Thomas Edgar WillsonThe Editor of the Theosophical Forum in April, 1901, noted the death of Mr. Thomas E. Willson in the previous month in an article which we reproduce for the reason that we believe many readers who have been following the chapters of "Ancient and Modern Physics" during the last year will like to know something of the author. In these paragraphs is s..
Experiments upon magnesia alba, Quicklime, and some other Alcaline Substances
by Joseph BlackBlack's Paper entitled "Experiments upon Magnesia Alba, Quicklime, and some other Alcaline Substances" was read in June 1755, and was first published in "Essays and Observations, Physical and Literary. Read before a Society in Edinburgh, and Published by them," Volume II., Edinburgh, 1756; pp. 157-225. It was subsequently reprinted several times du..
Five of Maxwell's Papers
by James Clerk MaxwellThis eBook includes 5 papers or speeches by James Clerk Maxwell.The contents are: Foramen Centrale Theory of Compound Colours Poinsot's Theory Address to the Mathematical Introductory LectureWhen observing the spectrum formed by looking at a long ve rtical slit through a simple prism, I no..