SYSK's 12 Days of Christmas… Toys: How Yo-Yos Work

The science of physics studies many topics, from the gravity holding planets together to electromagnetism and the microscopic forces inside the heart of the atom. Each of these forces works by different rules, some of which contradict each other. For centuries, scientists have sought a single theory that would unify these disparate fields and provide one equation from which we can derive a complete understanding of the universe. In The God Equation, theoretical physicist Michio Kaku suggests that an approach called “string theory” may be the path to uniting all the different laws of nature.

In this guide, we’ll trace the history of discoveries that unify areas of knowledge and reveal the underlying symmetries of nature. We’ll delve into string theory and define terms and concepts to give readers an understanding of the topic. We’ll discuss research to support string theory’s claims, and we’ll touch on the philosophical implications that a theory of the universe entails.

Have you ever wondered why some things bend under pressure while others break, or how some buildings remain standing for centuries? In Structures, scientist and engineer James Edward Gordon reveals why some materials and structures can withstand forces like gravity and wind while maintaining their form and stability while others collapse under pressure.

This guide walks you through Gordon’s key ideas, explaining the principles that underpin structural integrity. You’ll learn how a material’s internal composition determines its ability to withstand force, why force always seeks the path of least resistance through a structure, and how time can gradually weaken even the sturdiest constructions. Additionally, we’ll expand upon Gordon’s ideas with up-to-date research and insights from other materials scientists and engineers.

Since humans first looked up, we’ve wondered about our place in the cosmos, yet everything we’ve learned has shown that our ignorance still outstrips our knowledge. While to some that may seem disheartening, science educator Neil deGrasse Tyson finds it exciting to know there’s so much left in the universe to discover. The study of astrophysics, he says, gives us a valuable perspective on ourselves while revealing the nature of the universe in which we live.

Tyson explains in layman’s terms how physicists use the fundamentals of science and the full range of visible and invisible light to unravel the mysteries of the cosmos. He then goes on to cover the three biggest mysteries in astrophysics today—the origin of the universe, dark matter, and dark energy—while making a case for the benefits of understanding where we fit in the universal scheme. In this guide, we’ll also provide the historical context for astronomy’s groundbreaking discoveries and explain in more depth the current theories that are guiding astrophysics’ progress.

If you’ve ever pushed a “pull” door or accidentally flipped the wrong light switch, you’ve experienced the impact of bad design. You may have blamed these mistakes on yourself, but in reality, the way we interact with the physical world is often driven by design. From smartphones to stovetops, faucets to fighter jets: Every object we encounter on a daily basis is designed. Good design streamlines our lives and makes everyday tasks easier. Bad design, on the other hand, causes frustration, errors, and even dangerous accidents.

In order to tell the difference, we need to understand how we perceive the objects all around us, and how our brains make sense of that information. Combining the principles of cognitive psychology and engineering makes all of us smarter consumers and helps designers create products that work with users, rather than against them.

The science of physics studies many topics, from the gravity holding planets together to electromagnetism and the microscopic forces inside the heart of the atom. Each of these forces works by different rules, some of which contradict each other. For centuries, scientists have sought a single theory that would unify these disparate fields and provide one equation from which we can derive a complete understanding of the universe. In The God Equation, theoretical physicist Michio Kaku suggests that an approach called “string theory” may be the path to uniting all the different laws of nature.

In this guide, we’ll trace the history of discoveries that unify areas of knowledge and reveal the underlying symmetries of nature. We’ll delve into string theory and define terms and concepts to give readers an understanding of the topic. We’ll discuss research to support string theory’s claims, and we’ll touch on the philosophical implications that a theory of the universe entails.

Since humans first looked up, we’ve wondered about our place in the cosmos, yet everything we’ve learned has shown that our ignorance still outstrips our knowledge. While to some that may seem disheartening, science educator Neil deGrasse Tyson finds it exciting to know there’s so much left in the universe to discover. The study of astrophysics, he says, gives us a valuable perspective on ourselves while revealing the nature of the universe in which we live.

Tyson explains in layman’s terms how physicists use the fundamentals of science and the full range of visible and invisible light to unravel the mysteries of the cosmos. He then goes on to cover the three biggest mysteries in astrophysics today—the origin of the universe, dark matter, and dark energy—while making a case for the benefits of understanding where we fit in the universal scheme. In this guide, we’ll also provide the historical context for astronomy’s groundbreaking discoveries and explain in more depth the current theories that are guiding astrophysics’ progress.