This edition presents A. A. Robb’s deep dive into how we measure the world, beyond familiar ideas of rest and motion. It asks bold questions about what is real and how coordinates and measurements relate to physical facts.

The book blends philosophy with a mathematical approach, showing how a coordinate system can be built from simple, observable relations. It contrasts the usual theory of relativity with a framework that treats before and after as fundamental, not observer-dependent. Readers will encounter new concepts like conical order, optical planes, and the idea that congruence can be intrinsic to geometry.

Grasp how time intervals and distances can be defined from basic relations of before and after.
See how different coordinate systems can illuminate motion, rest, and the structure of space.
Learn how geometry and physics can align to offer a rigorous, descriptive foundation for time and space.
Understand the distinction between physical interpretation and pure mathematics within a unified theory.

Ideal for readers curious about the foundations of geometry and the physical meaning of measurement, this edition suits those who enjoy rigorous, idea-driven exploration of time and space.

"About this title" may belong to another edition of this title.

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**Please note our transit times are from the date of dispatch.** We first started out as ?The Paperback Exchange,? a chain of physical bookstores where we would part exchange your beloved books for new stories to transport you to faraway places. However, as shopping started to evolve to online shops and marketplaces, we bid our stores goodbye to become ?PBShop.? This transition has only allowed us to blossom as we now ship thousands of titles to book lovers across the globe. We pride ourselves in being a community of local book lovers which allows our passion and devotion to shine in everything we do. In 2020 we not only celebrated our 20th birthday but our 1st birthday as being completely employee owned after becoming an E.O.T in September 2019. We are proud to be different and embrace standing apart on a book mountain by working from a virtual inventory which allows us to provide thousands of books that may be difficult to get for your bookshelf or your studies. Working with a number of different suppliers allows us to explore other avenues such as puzzles, sheet music and even stationery so we really do have something for everyone. Life is about being versatile in all realms of existence. If this is your first purchase with us, or you are a returning customer, we would like to welcome you to the PBShop family, for there is no friend as loyal as a book. We are a company who put our customers at the centre of everything we do as we understand the importance of reading because once you learn to read, you will forever be free. There are a whole lot of things in this world of ours that we are yet to explore, which is why we will forever inspire curious minds.

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Shipping rates from United Kingdom to U.S.A.
Order quantity	10 to 20 business days	10 to 20 business days
First item	US$ 5.63	US$ 5.63

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