In physics, the idea of extra spatial dimensions originates from Nordstom s 5-dimensional vector theory in 1914, followed by Kaluza-Klein theory in 1921, in an effort to unify general relativity and electromagnetism in a 5 dimensional space-time (4 dimensions for space and 1 for time). Kaluza Klein theory didn t generate enough interest with physicist for the next five decades, due to its problems with inconsistencies. With the advent of supergravity theory (the theory that unifies general relativity and supersymmetry theories) in late 1970 s and eventually, string theories (1980s) and M-theory (1990s), the dimensions of space-time increased to 11 (10-space and 1-time dimension).

There are two main features in this book that differentiates it from other books written about extra dimensions: The first feature is the coverage of extra dimensions in time (Two Time physics), which has not been covered in earlier books about extra dimensions. All other books mainly cover extra spatial dimensions. The second feature deals with level of presentation. The material is presented in a non-technical language followed by additional sections (in the form of appendices or footnotes) that explain the basic equations and formulas in the theories. This feature is very attractive to readers who want to find out more about the theories involved beyond the basic description for a layperson. The text is designed for scientifically literate non-specialists who want to know the latest discoveries in theoretical physics in a non-technical language. Readers with basic undergraduate background in modern physics and quantum mechanics can easily understand the technical sections.

Part I starts with an overview of the Standard Model of particles and forces, notions of Einstein s special and general relativity, and the overall view of the universe from the Big Bang to the present epoch, and covers Two-Time physics. 2T-physics has worked correctly at all scales of physics, both macroscopic and microscopic, for which there is experimental data so far. In addition to revealing hidden information even in familiar "everyday" physics, it also makes testable predictions in lesser known physics regimes that could be analyzed at the energy scales of the Large Hadron Collider at CERN or in cosmological observations."

Part II of the book is focused on extra dimensions of space. It covers the following topics: The Popular View of Extra Dimensions, Einstein and the Fourth Dimension, Traditional Extra Dimensions, Einstein's Gravity, The Theory Formerly Known as String, Warped Extra Dimensions, and How Do We Look For Extra Dimensions?"

In physics, the idea of extra spatial dimensions originates from Nordstom s 5-dimensional vector theory in 1914, followed by Kaluza-Klein theory in 1921, in an effort to unify general relativity and electromagnetism in a 5 dimensional space-time (4 dimensions for space and 1 for time). Kaluza Klein theory didn t generate enough interest with physicist for the next five decades, due to its problems with inconsistencies. With the advent of supergravity theory (the theory that unifies general relativity and supersymmetry theories) in late 1970 s and eventually, string theories (1980s) and M-theory (1990s), the dimensions of space-time increased to 11 (10-space and 1-time dimension).

There are two main features in this book that differentiates it from other books written about extra dimensions: The first feature is the coverage of extra dimensions in time (Two Time physics), which has not been covered in earlier books about extra dimensions. All other books mainly cover extra spatial dimensions. The second feature deals with level of presentation. The material is presented in a non-technical language followed by additional sections (in the form of appendices or footnotes) that explain the basic equations and formulas in the theories. This feature is very attractive to readers who want to find out more about the theories involved beyond the basic description for a layperson. The text is designed for scientifically literate non-specialists who want to know the latest discoveries in theoretical physics in a non-technical language. Readers with basic undergraduate background in modern physics and quantum mechanics can easily understand the technical sections.

Part I starts with an overview of the Standard Model of particles and forces, notions of Einstein s special and general relativity, and the overall view of the universe from the Big Bang to the present epoch, and covers Two-Time physics. 2T-physics has worked correctly at all scales of physics, both macroscopic and microscopic, for which there is experimental data so far. In addition to revealing hidden information even in familiar "everyday" physics, it also makes testable predictions in lesser known physics regimes that could be analyzed at the energy scales of the Large Hadron Collider at CERN or in cosmological observations."

Part II of the book is focused on extra dimensions of space. It covers the following topics: The Popular View of Extra Dimensions, Einstein and the Fourth Dimension, Traditional Extra Dimensions, Einstein's Gravity, The Theory Formerly Known as String, Warped Extra Dimensions, and How Do We Look For Extra Dimensions?"

What, essentially, is an "inventive step" or an "original invention"? Is it possible for people to create anything that is truly new? After all, almost all of the ideas for inventions derive from principles already present in nature. These questions came to the author of this book-a professional inventor with more than thirty patents-as he tried to discover the connections between his work in science and technology and his increasing awareness of a path of inner development. What he observed was a mutual fertilization of ideas between these two distinct areas, one that takes place naturally and unintentionally. The act of creating in daily work caused him to become conscious of the activity of creative thinking itself, and he began to see how ideas spring forth and how they develop-from their first prototypical application to their physical manifestations. As Itzhak Bar Yona continued his "outer" work as an inventor, these questions and observations began a new direction of research into the question about the true source of creativity and invention. In the process, he realized that he would not obtain answers by looking only at the process of inventing itself or at the lives and methods of famous inventors, but would need to develop his own inner ability to observe his soul's faculties. To do this, he decided to use the esoteric methods of G.I. Gurdjieff, Rudolf Steiner, and Sri Aurobindo. This book, Where Do Ideas Come From, is the result of the author's continuing inner search for the source of the "inventive step" and the true nature of creativity. This book is primarily for those interested in creativity, in all of its aspects and applications. We find the human powers of creation in all areas of human activity-art, technology, science, and social activity. Proponents of modern education, however, prefer to focus on the acquisition of knowledge and skills rather than nurturing creativity, because most educators, scientists, and technologists fail to understand the essence of the creative impulse and the promise it holds. Where Do Ideas Come From probes the deep mystery of human creative drive. Part one raises theoretical questions about human creativity. Part two offers practical examples of the inventor's professional world. Part three allows the reader into the process of invention-how the inventor approaches problems and arrives at creative solutions. This deeply insightful book is recommended reading for anyone who is curious about or wishes to develop the hidden dimension of creative thinking.