Physics & Mechanics

Relativity: The Special and General Theory

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Albert Einstein


This is an introduction to Einstein’s space-bending, time-stretching theory of Relativity, written by the master himself. Special and Genera…

Easy Lessons in Einstein

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Edwin E. Slosson


Published in 1920, Slosson’s Easy Lessons in Einstein is one of the first popularizations of Einstein’s theory of relativity. This book is m…

Pioneers of Science

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Oliver Lodge


This book takes its origin in a course of lectures on the history and progress of Astronomy arranged for Sir Oliver Lodge in the year 1887. …

The Flying Saucers are Real

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Donald Keyhoe


The Flying Saucers are Real is a book that investigates numerous encounters between USAF fighters, personnel, and other aircraft, and UFOs b…

On the Heavens

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Aristotle


On the Heavens (Greek: Περί ουρανού, Latin: De Caelo or De Caelo et Mundo) is Aristotle's chief cosmological treatise. In it Aristotle argue…

Theory of Colours

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Johann Wolfgang von Goethe


Newton's observations on the optical spectrum were widely accepted but Goethe noticed the difference between the scientific explanation and …

My Inventions and Other Works

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Nikola Tesla


Between February and October 1919, Nikola Tesla submitted many articles to the magazine Electrical Experimenter. The most famous of these wo…

Great Astronomers

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Robert Stawell Ball


Of all the natural sciences there is not one which offers such sublime objects to the attention of the inquirer as does the science of astro…

The Science - History of the Universe Vol. 1: Astronomy

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Francis Rolt-Wheeler


Multi-volume work on science edited by Francis Rolt-Wheeler. The first volume is on Astronomy written by Waldemar Kaempffert. This book brie…

The Atomic Bombings of Hiroshima & Nagasaki

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U.S. Army Corps Of Engineers and United States Army Corps Of Engineers


This is the official report, published nearly 11 months after the first and only atomic bombings in history (to date), of a group of militar…

Radioactive Substances

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Marie Curie


Marie Curie, born in Warsaw in 1867, was a Polish-French physicist and chemist famous for her work on radioactivity. She was a pioneer in th…

The Einstein Theory of Relativity

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Hendrik A. Lorentz


When Albert Einstein published his first paper on relativity theory, it caused a stir in the physicists' community. When more and more evide…

The Science - History of the Universe Vol. 3: Physics & Electricity

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Francis Rolt-Wheeler


Multi-volume work on science edited by Francis Rolt-Wheeler. The third volume is on physics written by George Matthew and on electricity wri…

Golden mean to 5000 digits

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Jerry Bonnell and Jerry Bonnellandrobert Nemiroff


The golden section is a line segment sectioned into two according to the golden ratio. The total length a+b is to the longer segment a as a …

History of Astronomy

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George Forbes


An attempt has been made in these pages to trace the evolution of intellectual thought in the progress of astronomical discovery, and, by re…

Practical Talks by an Astronomer

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Harold Jacoby


The present volume has not been designed as a systematic treatise on astronomy. There are many excellent books of that kind, suitable for se…

Masters of Space

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Walter Kellogg Towers


This is the story of talking at a distance, of sending messages through space. It is the story of great men—Morse, Thomson, Bell, Marconi, a…

The New Physics and Its Evolution

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Lucien Poincaré


The end of the 19th and beginning of the 20th century marked a new era in the study of physics. It seemed as though everything that was thou…

One Hundred Proofs That the Earth Is Not a Globe

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William Carpenter


A bit of pseudo-science that will baffle, confuse, and amaze! Until the Space Age, there was little every-day, self-evident proof that the e…

A Popular History of Astronomy During the Nineteenth Century

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Agnes Mary Clerke


A Popular History of Astronomy during the Nineteenth Century was thought to be Agnes Mary Clerke's greatest work. It covers developments mad…

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