Physics is the study of the underlying laws and mechanisms explaining how the universe works. Most of what we do in daily life is based on a principle or law of physics—dealing with forces, motion, ...

The Big Ideas: What Is Reality? Effective theories in physics can help us measure and examine reality, despite the many things we do not yet know. By Lisa Randall Dr. Randall is a physicist. This ...

Physics is full of ideas that sound familiar but are often completely misunderstood. From relativity and quantum mechanics to mass, energy, and the nature of time, this video breaks down the most ...