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The equations of physics suggest time should be able to go backwards as well as forwards. Experience suggests, though, that it cannot. Why? And is time travel really possible?
The Economist • 2015 • Physics
People ask Google everything under the sun. One of the most commonly searched questions in the world is “What Is Love?” Allow us at SciShow to explain.
2014 • Physics
The quantum mechanics revolution has revolutionized modern technology. Renowned physicist Brian Greene takes us on a journey through the modern electronic age, from transistors to fiber optics, all made possible through quantum mechanics.
3/3 • Exploring Quantum History with Brian Greene • 2016 • Physics
The story of an extraordinary scientific adventure - the attempt to control gravity. For centuries, the precise workings of gravity have confounded the greatest scientific minds, and the idea of controlling gravity has been seen as little more than a fanciful dream. Yet in the mid 1990s, UK defence manufacturer BAE Systems began a groundbreaking project code-named Greenglow, which set about turning science fiction into reality. On the other side of the Atlantic, Nasa was simultaneously running its own Breakthrough Propulsion Physics Project. It was concerned with potential space applications of new physics, including concepts like 'faster-than-light travel' and 'warp drives'. Horizon explores science's long-standing obsession with the idea of gravity control. It looks at recent breakthroughs in the search for loopholes in conventional physics and examines how the groundwork carried out by Project Greenglow has helped change our understanding of the universe.
We are so used to some things that we stopped wondering about them. Like light. What is light? Some kind of wavy thing, right? Kind of.
In a Nutshell • 2015 • Physics