According to quantum mechanics, our universe is like a Lego set. All matter particles, as well as particles such as light that act as messengers between them, come in discrete blocks of energy. By ...

What is the purpose of light? How does light work? Why does light exist? This video explores the longstanding debate over ...

The photoelectric effect, first explained in 1905, transformed our understanding of how light interacts with matter. When high-energy light hits atoms, it knocks electrons loose. This process powers ...

Students and faculty of UC Santa Barbara’s physics department gathered in Corwin Pavilion for the department’s annual Nobel Prize-focused colloquium on Oct. 14. This year’s event was particularly spec ...

Researchers at Hiroshima University have developed a realistic, highly sensitive method to detect the Unruh effect—a long-predicted phenomenon at the crossroads of relativity and quantum theory. Their ...