An unborn baby with a fatal heart defect . . . a skier submerged for an hour in a frozen Norwegian lake . . . a comatose brain surgery patient whom doctors have declared a "vegetable."

Twenty years ago all of them would have been given up for dead, with no realistic hope for survival. But today, thanks to incredible new medical advances, each of these individuals is alive and well . . .Cheating Death.

In this riveting book, Dr. Sanjay Gupta-neurosurgeon, chief medical correspondent for CNN, and bestselling author-chronicles the almost unbelievable science that has made these seemingly miraculous recoveries possible. A bold new breed of doctors has achieved amazing rescues by refusing to accept that any life is irretrievably lost. Extended cardiac arrest, "brain death," not breathing for over an hour-all these conditions used to be considered inevitably fatal, but they no longer are. Today, revolutionary advances are blurring the traditional line between life and death in fascinating ways.

Drawing on real-life stories and using his unprecedented access to the latest medical research, Dr. Gupta dramatically presents exciting accounts of how pioneering physicians and researchers are altering our understanding of how the human body functions when it comes to survival-and why more and more patients who once would have died are now alive. From experiments with therapeutic hypothermia to save comatose stroke or heart attack victims to lifesaving operations in utero to the study of animal hibernation to help wounded soldiers on far-off battlefields, these remarkable case histories transform and enrich all our assumptions about the true nature of death and life.

This textbook offers a complete and rigorous presentation of the fundamentals and applications of wave optics. The material of the book covers topics on wave nature of light—reflection, refraction, polarisation, diffraction, dispersion and scattering of electromagnetic waves. Interference phenomenon is discussed both by division of wavefront and by division of amplitude. Diffraction is classified as Fresnel diffraction and Fraunhofer diffraction. The discussion on Fraunhofer diffraction has been used to explain the theory and resolving power of optical instruments. The role of phenomena of dispersion and scattering of light has been lucidly explained in the field of communication of information, its quality and content. The last three chapters are devoted to the study of the recently developed modern topics—lasers, holography, and fibre optics—all of which have opened up immense opportunities for new applications in almost all branches of science and engineering. Though the book is intended for the undergraduate students of physics—both honours and general courses—it will also be useful to candidates aspiring to sit the competitive examinations. KEY FEATURES : Presents interactive text interspersed with in-text questions to enable students to shift focus on active learning. Uses access devices such as expected learning outcomes and practice exercises for directed teaching–learning. Includes numerous worked-out examples to illustrate the concepts and provides review questions to test the students’ understanding of the subject. Gives chapter-end summary for quick revision of the important results.
An unborn baby with a fatal heart defect . . . a skier submerged for an hour in a frozen Norwegian lake . . . a comatose brain surgery patient whom doctors have declared a "vegetable."

Twenty years ago all of them would have been given up for dead, with no realistic hope for survival. But today, thanks to incredible new medical advances, each of these individuals is alive and well . . .Cheating Death.

In this riveting book, Dr. Sanjay Gupta-neurosurgeon, chief medical correspondent for CNN, and bestselling author-chronicles the almost unbelievable science that has made these seemingly miraculous recoveries possible. A bold new breed of doctors has achieved amazing rescues by refusing to accept that any life is irretrievably lost. Extended cardiac arrest, "brain death," not breathing for over an hour-all these conditions used to be considered inevitably fatal, but they no longer are. Today, revolutionary advances are blurring the traditional line between life and death in fascinating ways.

Drawing on real-life stories and using his unprecedented access to the latest medical research, Dr. Gupta dramatically presents exciting accounts of how pioneering physicians and researchers are altering our understanding of how the human body functions when it comes to survival-and why more and more patients who once would have died are now alive. From experiments with therapeutic hypothermia to save comatose stroke or heart attack victims to lifesaving operations in utero to the study of animal hibernation to help wounded soldiers on far-off battlefields, these remarkable case histories transform and enrich all our assumptions about the true nature of death and life.
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