Résultats Éditeur "Dreamscape Media, LLC" dans Physique

Nearly everyone is familiar with holograms - three-dimensional images projected into space with the aid of a laser. Two of the world's most eminent thinkers believe that the universe itself may be a giant hologram, quite literally a kind of image or construct created, at least in part, by the human mind. University of London physicist David Bohm, one of the world's most respected quantum physicists, and Stanford neurophysiologist Karl Pribram, an architect of our modern understanding of the brain, have developed a remarkable new way of looking at the universe.

Since the 1950s, scientists have attempted to harness nuclear fusion—the process that creates the Sun's energy—to generate near-limitless amounts of electricity. But the fact that we still have no fusion power plants is testament to the complexities of the challenge. Now, the deepening climate crisis means that researchers around the world are in a race to create a mini-Sun here on Earth. The glittering prize is an energy source that emits no greenhouse gases and could solve energy equity and supply issues at a stroke.

In 2003, Russian physicists Andre Geim and Konstantin Novoselov found a way to produce graphene - the thinnest substance in the world - by using sticky tape to separate an atom-thick layer from a block of graphite. Their efforts would win the 2010 Nobel Prize for Physics, and now the applications of graphene and other two-dimensional substances form a worldwide industry.

Over the years, color has dazzled, enhanced, and clarified the world we see. The experimental palettes of painting, the advent of the color photograph, Technicolor pictures, color printing, and so on have created a vivid and vibrant continuum. These ways of representing reality in “living color” echo our evolutionary reliance on and indeed privileging of color as a complex and vital form of consumption, classification, and creation. It’s everywhere we look, yet do we really know much of anything about it?

In the late 1940s, a handful of visionaries were working to steer Europe toward a more peaceful future through science, and CERN, the European particle physics laboratory, was duly born. James Gillies tells the gripping story of particle physics, from the original atomists of ancient Greece through the people who made the crucial breakthroughs to CERN itself, one of the most ambitious scientific undertakings of our time, and its eventual confirmation of the Higgs boson.

Computer technology has improved exponentially over the last 50 years. But the headroom for bigger and better electronic solutions is running out. Our best hope is to engage the power of quantum physics. “Quantum algorithms” had already been written long before hardware was built. These would enable, for example, a quantum computer to exponentially speed up an information search or crack the mathematical trick behind internet security.

On September 14, 2015, after 50 years of searching, gravitational waves were detected for the first time, and astronomy changed forever. Up until then, investigation of the universe had depended on electromagnetic radiation: visible light, radio, X-rays, and the rest. But gravitational waves - ripples in the fabric of space and time - are unrelenting, passing through barriers that stop light dead.

Big History, the field that studies the entire known past of our universe to give context to human existence, has so far been the domain of historians. Geologist Walter Alvarez - best known for his Impact Theory explaining dinosaur extinction - makes a compelling case for a new, science-first approach to Big History.

Astronomers have recently discovered thousands of planets that orbit stars throughout the Milky Way. Much of what has captured the imagination of planetary scientists and the public is the unexpected strangeness of these distant worlds. The quest to find other worlds brims with possibility, and Donald Goldsmith presents the science of exoplanets and the search for extraterrestrial life in a way that even Earthlings with little to no background in astronomy or astrophysics can understand and enjoy.

In this bundle, astrophysicist Andrew May take a deep dive into space exploration and our continued and evolving fascination with the cosmos. Astrobiology: May gives an expert overview of our current state of knowledge, looking at how life started on Earth, the tell-tale signatures it produces, and how such signatures might be detected elsewhere in the Solar System. Destination Mars: May traces the history of our fascination with the Red Planet. The Space Business: May provides an in-depth look at the triumphs and heroic failures of quixotic quests to commercialize the final frontier.

As end-of-the-world scenarios go, an apocalyptic collision with an asteroid or comet is the new kid on the block, gaining respectability only in the last decade of the 20th century with the realization that the dinosaurs were wiped out by just such an impact. Now the science community is making up for lost time, with worldwide efforts to track the thousands of potentially hazardous near-Earth objects and plans for high-tech hardware that could deflect an incoming object from a collision course.

Four decades after Viking and almost half a century after Apollo, technology has improved beyond recognition - as has politics. As private ventures like SpaceX seize center stage from NASA, Mars has undergone a seismic shift - it’s become the prime destination for future human expansion and colonization. But what’s it really like on Mars, and why should anyone want to go there? How do you get there, and what are the risks? Astrophysicist and science writer Andrew May answers these questions and more, as he traces the history of our fascination with the Red Planet.

Nearly 60 years ago, Nobel Prize winners Arno Penzias and Robert Wilson stumbled across a mysterious hiss of faint radio static that was interfering with their astronomical observations. In it, they had found the key to unravelling the story of the big bang and the origin of our universe. That signal was the cosmic microwave background (CMB), the earliest light in the universe, released 379,000 years after the big bang. This is the enthralling story of the quest to understand the CMB radiation and what it can tell us of the origins of time and space.

The Martians explores the CIA's top-secret search for the Martians, multiple photos of strange anomalies, and the latest revelations about the environment and water on Mars. And most tantalizing of all: Did an ailing Martian race come to Earth in past eons and were they confused with gods? The questions concerning life on Mars - then and now - are many. The answers are astounding.