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]

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 super-accurate 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]

Data points, equations, and analysis are only part of a day in the life of a mathematician. UC San Diego's Alex Cloninger shares how he uses math to ask smarter questions, solve real world problems, and foster creativity. Series: "Education Channel" [Science] [Show ID: 37189]

With Amazon's Alexa spying on her owners, a massive data breach masterminded by Cambridge Analytica, and evidence of election interference promulgated by Facebook, tech policy has never had more significant implications for our society and democracy. Roger McNamee—noted tech venture capitalist, early mentor to Mark Zuckerberg, and Facebook investor—talks with Henry Brady, Dean of the Goldman School of Public Policy at UC Berkeley, about how he came to realize the serious damage that Facebook and other social media giants are doing and how he has committed to try to stop them. Series: "Public Policy and Society" [Public Affairs] [Humanities] [Show ID: 36880]

Fall of 2020 is full of uncertainty. Many college students are considering taking a gap year. Though it may sound like just a year away from the classroom, through thoughtful planning, students can find many experiential learning opportunities. Find out how gap year programs are operating during COVID-19, how to find programs that fit your needs, and hear from a current gap year student. Series: "STEAM: Adding Arts to STEM Education" [Education] [Show ID: 36091]

The burning candle water experiment is something you can do at home. See what happens when the candle burns out. Think about what you know about air pressure and how that explains what you see. You created an area of low pressure! Once the candle runs out of oxygen, the candle burns out and the air inside the glass cools down which lowers the air pressure inside the glass. Now there is a difference between the air pressure outside and inside the glass. The high pressure outside allows the water to be pushed into the lower pressure inside the glass and the water rises inside the glass. Series: "STEAM: Adding Arts to STEM Education" [Education] [Show ID: 36147]

Discovery Charter School is a STEAM and dual immersion school. For their virtual Multicultural night, Students demonstrate what they have learned about world cultures and their own heritage through projects and performances. Series: "STEAM: Adding Arts to STEM Education" [Education] [Show ID: 36070]

Educators from e3 Civic High School explain UC Scout - an SAPEP program that develops and delivers A-G approved, online classes and curriculum to students around the globe. Series: "STEAM: Adding Arts to STEM Education" [Education] [Show ID: 36031]

Do you have what it takes to earn the crown of The Great Geography Clues Game? You will be exploring the world, while given several clues along the way in order to guess the famous place or city in question. Take the quiz and then challenge your family and friends to beat your score. Good luck! Series: "STEAM: Adding Arts to STEM Education" [Education] [Show ID: 36022]

Learn about plastic casting and electronics with Instamorph - a safe, non-toxic, low temperature thermoplastic. Similar to hot glue but you can mold it, or shape it by hand. When it cools, it turns hard again. Put an LED in it while it's soft and attach a coin cell battery to make a "Glowie". The molds are also easy to make, from 100% silicone and cornstarch Series: "STEAM: Adding Arts to STEM Education" [Science] [Education] [Show ID: 36025]