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This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This w...

How alien would aliens be? Would they look like us or perhaps more like an octopus? How would they communicate? Could we even hear their voices, assuming they have them? Like us, aliens would be constrained by the physical world. Understanding how those physical constraints apply both to us and to aliens is the theme of this book. The constraints imply that they will not be all that different from us, perhaps half to twice as big as we are. Th...

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This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This w...

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In case you haven't noticed, you get to choose the world you live in. I don't mean you can control the conditions of your life. You may have had little or no choice of the house you live in or even of the street where you live. Certainly most of us do not have any great deal of control over our economic, political and cultural circumstances. Where we do have a choice is in our outlook. We can, indeed we must, choose how we view the world. We c...

Keine Beschreibung.

Keine Beschreibung.

Keine Beschreibung.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This w...

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This w...

The name Diophantus has long been attached to what we call under-determined algebraic problems with more unknowns than information. He himself was short of good methods of attack but his work has been the jump off point for a great and hugely productive range of mathematical developments. His choice of word problems remains a source of fascination to this day and that is the topic of this book..

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This is a great explanation of the Ptolemaic and Copernican systems in 36 diagrams, no equations! The accompanying text makes clear both the basics of the systems as well as the most intricate details. The often to-scale diagrams and the text explain the systems to a depth most readers would not attain by a reading and re-reading of the great works of Ptolemy and Copernicus.

Aimed at the needs, challenges and concerns of grade school teachers, this is a large collection of inexpensive and delightful activities ideas for teaching K-5 science. The science involved is explained within the activities texts to help those who may not be confident of their own understanding of the material. It includes ideas for remembering and summarizing activities as well as discovery activities. While the focus is primarily on the ph...