# Potency and safety analysis of hemp-derived delta-9 products: The hemp vs. cannabis demarcation problem

## Contents

* Relativity: The Special and the General Theory* (German:

*Über die spezielle und die allgemeine Relativitätstheorie*) began as a short paper and was eventually published as a book written by Albert Einstein with the aim of explaining the theory of relativity.

## Contents

. . . an exact insight into the theory of relativity to those readers who, from a general scientific and philosophical point of view, are interested in the theory, but who are not conversant with the mathematical apparatus of theoretical physics.

— from the Preface

## Publication history

It was first published in German in 1916 and later translated into English in 1920.^{[1]}^{[2]}^{[3]} It is divided into three parts, the first dealing with special relativity, the second dealing with general relativity, and the third dealing with considerations on the universe as a whole. There have been many versions published since the original in 1916, the latest being in 2015. The 2015 publication by Princeton University Press, is billed as the 100th Anniversary Edition, and was issued as an e-book in 2019.

## Reception

People such as Robert W. Lawson have called the work unique in that it gives readers an insight into the thought processes of one of the greatest minds of the 20th century.^{[3]}

## Notes

**^**Einstein, Albert (1917).*Über die spezielle und die allgemeine Relativitätstheorie : (Gemeinverständlich)*(Erstaufl. ed.). Braunschweig: Vieweg. Retrieved July 5, 2016 – via ECHO – Cultural Heritage Online - Max Planck Institute for the History of Science, Library.**^**Einstein, Albert (1920).*Über die spezielle und allgemeine Relativitätstheorie*(5 ed.). Braunschweig: F. Vieweg & Sohn. Retrieved July 5, 2016 – via Internet Archive.- ^
^{a}^{b}Einstein, Albert (1920).*Relativity: The Special and the General Theory: Popular Exposition; authorised translation by Robert W. Lawson, D.Sc., University of Sheffield*(3 ed.). London: Methuen & Co. Ltd. Retrieved July 4, 2016 – via Internet Archive.

## External links

- Albert Einstein.
*Relativity: the Special and the General Theory*, 10th edition (there are a total of 17 editions). ISBN 0-517-029618 at Project Gutenberg -
*Relativity: The Special and General Theory*public domain audiobook at LibriVox - Albert Einstein,
*Relativity: The Special and General Theory*(1920/2000) ISBN 1-58734-092-5 at Bartleby.com