Dialogues Concerning Two New Sciences

Dialogues Concerning Two New Sciences  (1638)  by Galileo Galilei, translated by Henry Crew and Alfonso De Salvio

Two New Sciences (Italian title: Discorsi e Dimostrazioni Matematiche intorno a Due Nuove Scienze) was the last work of the Italian mathematician, astronomer and physicist, Galileo Galilei, and is generally regarded today as his most important.

Contents

• Translators' Preface
• Introduction
• Dedication
• The Publisher to the Reader

Two New Sciences by Galileo

• First Day Interlocutors: Salviati, Sagredo and Simplicio
• Second Day
• Third Day Change of Position. [ De Motu Locali ]

• Appendix

This is a translation and has a separate copyright status from the original text. The license for the translation applies to this edition only.
Original:	This work published before January 1, 1923 is in the public domain worldwide because the author died at least 100 years ago.
Translation:	This work is in the public domain in the United States because it was published before January 1, 1923. The author died in 1953, so this work is also in the public domain in countries and areas where the copyright term is the author's life plus 50 years or less. This work may also be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works.