Physics (Audio) UCTV

 Science

Guest speakers, researchers and University of California faculty explore physics to better understand and predict the world around us.

My Journey Through Mathematics and Physics with Elliott Lieb 2023 Kyoto Prize Laureate in Basic Sciences
The 2023 Kyoto Prize Laureate in Basic Sciences, Professor Elliott Lieb presents snapshots of his seventyyear journey through the world of science, first as a wouldbe engineer, then as a physicist and later as a mathematician and a mathematical physicist. In many encounters with colleagues in different areas of research he learned that mathematics and a mathematical perspective can be pivotal in developing our thinking about physics. This fundamental connection between mathematics and physics was not always accepted at the beginning of my career, and it was even vigorously denied by some mathematicians and physicists. Lieb mentions some of his work to illustrate the value of mathematical physics for theoretical physics and to pure mathematics, the first being the Polaron bound found with K. Yamazaki in Kyoto in 1957. Another is the "ice problem", where he calculated the number of ways to color a chess board with only three colors so that neighboring squares never have the same color. Series: "Kyoto Prize Symposium" [Science] [Show ID: 39424]

What It Means To Be Curious With Nobel Laureate Barry Barish
Nobel Laureate and physicist Barry Barish, professor at UC Riverside, reflects on his life in science, being curious, experiencing imposter syndrome, and working in the field of physics with Brian Keating, host of the "Into the Impossible" podcast and professor of physics at UC San Diego. [Humanities] [Science] [Show ID: 38727]

Carver Mead  2022 Kyoto Prize Laureate in Advanced Technology: Engineering Concepts Clarify Physical Law
Carver Mead is a pioneer of modern microelectronics. He proposed a new methodology, very largescale integration (VLSI), that would make it possible for creating millions or billions of transistors on a single integrated circuit (microchip). His research investigated techniques for VLSI, designing and creating highcomplexity microchips. This design process has advanced electronic technologies and transformed the lives of most of the people inhabiting our planet. Mead also paved the way to VLSI design automation and facilitating the revolutionary development of today's VLSIbased electronics and industry. For his work and contributions, Mead was awarded the 2022 Kyoto Prize in Advanced Technology. In his talk entitled, "Engineering Concepts Clarify Physical Law" Mead will discuss a simplified theory that might serve as an entry point for further development by generations of young people who feel disenfranchised by the existing establishment. Series: "Computer Science Channel" [Science] [Show ID: 38572]

Honoring the Historic Contributions of Mayer Hall to the Field of Physics
The American Physical Society has designated UC San Diego’s Mayer Hall as a historic site in recognition of research conducted by physicists Walter Kohn and Lu Jeu Sham on density functional theory. Their development of the "KohnSham equation" inside Mayer Hall became the foundation for the computation of the material properties of electrons and nuclei. Understanding the electronic properties of complex systems is essential to the design and engineering of new materials and drugs. Kohn and Pierre Hohenberg on sabbatical in Paris developed a theorem for the electron ground state energy to depend on the electron density distribution instead of the usual potential energy due to the nuclei. In Building C (later named Mayer Hall), from 196466, Kohn and Sham laid the foundation of a computation method, based on a singleparticle equation composed of its quantum kinetic energy and the potential energy including the interaction effects. [Science] [Show ID: 38313]

A New Measure: The Revolutionary Quantum Reform of the Modern Metric System
The International System of Units (the SI), the modern metric system, has recently undergone its most revolutionary change since its origins during the French Revolution. The nature of this revolution is that all of the base units of the SI are now defined by fixing values of natural constants. Our measurement system is now, both philosophically and practically, strongly quantum. Nobel Prize recipient William Phillips, Ph.D., a Distinguished University and College Park Professor of Physics at the University of Maryland, talks about why this reform was needed and how it is done. Series: "UC Berkeley Graduate Lectures" [Science] [Show ID: 37728]

Time Einstein and the Coolest Stuff in the Universe
At the beginning of the 20th century, Einstein changed the way we think about time. Now, early in the 21st century, the measurement of time is being revolutionized by the ability to cool a gas of atoms to temperatures millions of times lower than any naturally occurring temperature in the universe. Nobel Prize recipient William Phillips, Ph.D., a Distinguished University and College Park Professor of Physics at the University of Maryland, talks about laser cooling and ultracold atoms and how they relate to time.
Atomic clocks, the best timekeepers ever made, are one of the scientific and technological wonders of modern life. Such superaccurate clocks are essential to industry, commerce, and science; they are the heart of the Global Positioning System (GPS), which guides cars, airplanes, and hikers to their destinations. Today, the best primary atomic clocks use ultracold atoms. Series: "UC Berkeley Graduate Lectures" [Science] [Show ID: 37727]