This book is about why we age and how to fix it. Human aging, a complex biological process, has long eluded a unified explanation. The book explains that aging is fundamentally a cellular energy crisis, driven by the progressive accumulation of damage to the vulnerable DNA of mitochondria, the cell's primary energy producers. Drawing on this perspective, which emphasizes energy conservation and flow in biological systems, new light is cast on the traditional theories of aging, demonstratin...

This book shines bright light into the dim recesses of quantum theory, where the mysteries of entanglement, nonlocality, and wave collapse have motivated some to conjure up multiple universes, and others to adopt a "shut up and calculate" mentality. After an extensive and accessible introduction to quantum mechanics and its history, the author turns attention to his transactional model. Using a quantum handshake between normal and time-reversed waves, this model provides a clear visual pic...

"True hard science fiction—deftly done, with plenty of fine surprises." — Gregory Benford."Twistor marks the arrival of a major new science-fiction talent." — Gene Wolfe."A fine hard science thriller, very enjoyable." — Greg Bear.Research scientist David Harrison happens upon the "twistor effect," a phenomenon that opens doors into countless alternate universes. The discovery's potential for unlimited power draws the attention of industrial spies and corporate...

This is a book about the science of shooting guns but it also applies to archery. Beginning with the most basic science, that gravity means you can never shoot straight, it carefully and clearly explains the physical science behind all aspects of shooting. Projectile motion, the effects of air resistance and rotational motion on projectiles, the importance of projectile shapes and materials, the science behind zeroing and many other topics are explained in the basic science section. We the...

What I have observed of student struggles with introductory physics, after more than forty years of teaching it, is that learning how to think like a physicist is a much greater challenge than learning the subject matter. Introductory physics courses introduce students not only to content but also to new ways of thinking. The 75 forays of this book are invitations to a wide-ranging exploration of the physical world. A foray Is defined as "a venture or initial attempt in some field" and tha...

Diophantine problems are word problems that essentially set up algebraic equations to be solved for positive integer or at least rational solutions. They are typically under-determined which opens up the possibility, if not the likelihood, of multiple solutions. This under-determined nature lends an air of mystery to them that adds to their fascination. Solving them seems magical because one intuitively expects them to be impervious to solution.The category of Diophantine problems i...

Ordinary differential equations come in an almost bewildering variety. This field guide systematizes them and gives general methods for solving each type. Since there are numerous specific examples, some even with specific names, for which simpler methods are known, the guide also enumerates these too along with the secondary and tertiary methods for solving them.

It has been 15 years since the events of Einstein’s Bridge. George and Alice Griffin and Roger Coulton have established the Iris Foundation, a powerful island-isolated research organization tasked with exploiting the technologies learned from the Makers, re-learning Maker techniques for creating wormholes, reestablishing contact with the Makers, and protecting Earth from Hive invasions. Sparked by a new idea from Roger, Iris researchers finally master wormhole tec...

Word play has surely been around since language began. One suspects it may even have been a prime motivation in the very first framing of language. Language as a wholesale joke? Don't underestimate the possibility. Word juggling, tossing words around, can assume an almost infinite variety of forms. Riddles and puns are apparently as old as language itself. The invention of writing and alphabets then opened up more possibilities that I classify as letter juggling, Reversible words and palin...

Why do we think matter is made of atoms and the Earth goes around the Sun? How big is the universe? Did it have a beginning or is it eternal? Is heat a fluid or just the random motion of molecules? Is light made of particles or is it a fluid or maybe something else? This book answers these questions and many more as it traces the development of the modern scientific understanding of the physical world. The historical approach allows us to see not only how the content of the physical scienc...

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. They will depend on vision and hearing as we do a...

Somewhere in the Multiverse, in a lab distant from the Makers’ Planet, Tunnel Maker, Creator of Bridges, answers an alarm. His inter-universe probe is detecting signals from another bubble universe, indicating that some new high-intelligence alien species is doing high-energy physics and creating hyperdimensional signals. Tunnel Maker knows that, in another bubble universe, the predatory Hive Mind should be receiving the same signals. It is time to make a Bridge . . .George Griffin...