<p>"An uncommonly good study of the nature of communication, the concepts of information theory, the brilliant pioneer work of Claude Shannon, the relation of information theory to physics, cybernetics, psychology, art" -- Scientific American</p>

Symbols, Signals, and Noise: The Nature and Process of Communication.

Pierce, J. R.

Harper Row Publishers

Almost all about waves

Among his peers, John R. Pierce is properly appreciated as a creator of complex engineering realities from the most basic of scientific insights. To those of more modest technical attainment, he can be directly valued as a teacher with a talent for making his concerns understandable to those willing to commit their interest and attention. In this book, he once again brings a diffuse and difficult subject within reach of nonspecialized readers. The book presents waves in all their manifestations and realizations, a subject that perfectly joins basic science and everyday reality. And it does so with what, nowadays, might be regarded as a modicum of mathematics, venturing just across the line of partial differential equations, which is where the wave equation is at home and emerges to be seen fully revealed.  Pierce considers waves in the most general light as one of the great unifying concepts of physics. This approach will allow the reader to comprehend an almost unlimited array of specific phenomena: "Modern physics is full of waves," Pierce writes, "the earthquake waves which seismologists study; the waves and ripples on oceans, lakes, and ponds; the waves of sound which travel through the air; the mechanical waves in stretched strings and in the quartz crystals that are used to control the frequency of radio transmitters; the electromagnetic waves that constitute light, and that are radiated by radio transmitters and received by radio receivers; and finally, the waves of what?—probability, perhaps—which are used in quantum mechanics to predict the behavior of electrons, atoms, and complex substances."  The emphasis is on behavior common to all these and other waves: what happens when waves interact with one another in waveguides and traveling-wave tubes; the behavior of waves in moving media; the directional patterns of complex sources; transmission between directive antennas; waves from bodies moving faster than the speed of waves in the medium and waves carried along by bodies moving more slowly than waves in the medium and the nature of plane and nearly plane waves. Among the concepts covered are phase velocity and group velocity, vector and complex representation, energy and momentum, coupled modes and coupling between modes, polarization, diffraction, and radiation.

Almost All About Waves

Politics & Social Sciences

Social Sciences

Mit Pr

<p>Giving up isn’t an option. It’s an adventure. Following a car crash, Chase McKinney wakes in a swirling mist and witnesses the murder of children via a three-sided portal into another world. He steps through in search of young men called Chosen to help track the killer and child-stealer, Ancient Piper. But when Chase finds things sometimes pass through him and he can fly, it’s clear to him different rules govern. And when he finally locates the Chosen, he soon learns he must survive this world, with its circa 1900s technology wed to supernatural dangers. For God has a plan for him beyond rescuing children—a seemingly irrational plan to experience life more abundantly. Chase just wants to get back to his wife and family and fix the damage he caused obsessing over his job. But to do so means relying on young Shadowboxer—a leader who second-guesses himself—and learn a difficult lesson from the last person he would expect to see in this bizarre place. He and the Chosen must also sail to a deadly beachhead and a fortress-turned-prison. Because there, a master deceiver plots to establish a world opposed to God, and brainwashed children are only one factor in his death campaign against God-followers. Meanwhile, Chase’s body lies in a coma. Can his consciousness reunite with it? Or will one obstacle be too much to overcome? Himself. Control or give up control? Chase must choose and perhaps die in the choosing. Or, maybe worse, he might live—unchanged.</p>

Yield (Children of the Burning Heart)

Religion & Spirituality

Christian Books & Bibles

Bright Wick Media LLC

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