Where Does Light Come From

"Light comes from natural sources like the sun. Light also comes from light bulbs and candles. Read to learn about different sources of light."--

Yes, the main source of light on Earth is the sun, which is the nearest star to our galaxy. But did you know that there are other sources of light? This book will introduce first graders to natural and artificial sources of light. It will also discuss what light is and how it travels. Coupled with beautiful images, this book is definitely a delight to add to your collection!

Light comes from natural sources like the sun. Light also comes from lightbulbs and candles. Read to learn about different sources of light.

Light and light based technologies have played an important role in transforming our lives via scientific contributions spanned over thousands of years. In this book we present a vast collection of articles on various aspects of light and its applications in the contemporary world at a popular or semi-popular level. These articles are written by the world authorities in their respective fields. This is therefore a rare volume where the world experts have come together to present the developments in this most important field of science in an almost pedagogical manner. This volume covers five aspects related to light. The first presents two articles, one on the history of the nature of light, and the other on the scientific achievements of Ibn-Haitham (Alhazen), who is broadly considered the father of modern optics. These are then followed by an article on ultrafast phenomena and the invisible world. The third part includes papers on specific sources of light, the discoveries of which have revolutionized optical technologies in our lifetime. They discuss the nature and the characteristics of lasers, Solid-state lighting based on the Light Emitting Diode (LED) technology, and finally modern electron optics and its relationship to the Muslim golden age in science. The book’s fourth part discusses various applications of optics and light in today's world, including biophotonics, art, optical communication, nanotechnology, the eye as an optical instrument, remote sensing, and optics in medicine. In turn, the last part focuses on quantum optics, a modern field that grew out of the interaction of light and matter. Topics addressed include atom optics, slow, stored and stationary light, optical tests of the foundation of physics, quantum mechanical properties of light fields carrying orbital angular momentum, quantum communication, and Wave-Particle dualism in action.

Excerpt from Light Come, Light Go: The passion for speculation which, throughout all ages, has captivated the great bulk of humanity, would seem to be an innate characteristic of mankind. It assumes various forms and guises which often deceive those over whom it exercises its sway, and becomes in numberless cases a veritable obsession, causing its victims to devote the whole of their time, thoughts, and money—sometimes even their lives—to its service. Devotees of the simpler forms of gambling, such as are to be procured at the card-table and on the race-course, are often looked down upon by people who are themselves under the sway of other insidious, if more reputable, modes of tempting fortune. For all speculation, whether it be in pigs or wheat, stocks and shares, race-horses or cards, is in essence the same—its main feature being merely the desire to obtain “something for nothing,” or in other words to acquire wealth without work. Gambling, of no matter what kind, is thus a conscious and deliberate departure from the general aim of civilised society, which is to obtain proper value for its money. The gambler, on the other hand, receives either a great deal more than he gives or nothing at all.

Bob Dylan is the prince of self-reinvention and deflection. Whether it's the folkies of Greenwich Village, the student movement of the 1960s and 1970s, Born Again Christians, the Chabad Lubavitch community, or English Department postmodernists, specific intellectual and sociopolitical groups have repeatedly claimed Bob Dylan as their spokesperson. But in the words of filmmaker Todd Haynes, who cast six actors to depict different facets of Dylan's life and artistic personae in his 2009 film I'm Not There, "The minute you try to grab hold of Dylan, he's no longer where he was." In Light Come Shining, writer Andrew McCarron uses psychological tools to examine three major turning points - or transformations - in Bob Dylan's life: the aftermath of his 1966 motorcycle "accident," his Born Again conversion in 1978, and his recommitment to songwriting and performing in 1987. With fascinating insight, McCarron reveals how a common script undergirds Dylan's self-explanations of these changes; and, at the heart of this script, illuminates a fascinating story of spiritual death and rebirth that has captivated us all for generations.