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Grip is the frictional force that holds the tires on the track, and NASCAR mechanics are always looking for ways to increase the grip of tires. The cars have less grip as their speed increases, and mechanics must understand the relationship between speed and grip to ensure the race car is able to perform safely at high rates of speed. Part of "The Science of Speed" series.
(Source: DCMP)
In 2008, NASCAR driver Michael McDowell lost control of his car and hit the wall at 170 mph. Fortunately, McDowell was able to walk away from the accident, which is a testament to the safety elements NASCAR has instituted. NASCAR officials apply the scientific principle of the conservation of energy to strengthen their safety measures. Part of "The Science of Speed" series.
Corn is king. It can be found in other foods, in the ink for pens, and in gas for cars. Indeed, it's one of the most versatile substances on the planet. Today, it is a very different product than the one that once grew wild across North America. In this episode, Dr. Joe Schwarcz traces the evolution of corn. Part of the "Science to Go With Dr. Joe Schwarcz" series.
Cars use airbags. Packages use airbags. Why shouldn't eggs use airbags too? Students model NASA's airbag landing system in this activity from "Design Squad Nation." They design and build protective covers made of balloons to protect an egg dropped from a height of three feet. Their systems model the airbag landing systems used by three NASA Mars missions. The students use the engineering design process, apply a variety of science concepts, and learn about NASA's exploration of the solar system. Part of the "Design Squad Nation" series.
Host Lisa Van Pay visits the scientists and engineers working to make the electric car of the future a reality today. One of the toughest parts is storing enough potential energy in the battery. Graduate student Katharine Stroukoff from the University of Texas-Austin explains how her research may help build a better battery, while Mike Nawrot and Dan Lauber, members of the MIT electric vehicle team, describe the advantages of their fully electric Porsche 914.
An energy source unrivaled in efficiency and power, oil is the driving force behind today's industries and economies. It touches nearly every aspect of our daily lives, from our food and our clothing to our cars, yet most of us know very little about it. Traces the story of oil through the centuries, from its birth deep in the dinosaur-inhabited past to its ascendancy as an indispensable ingredient of modern life. Yet many experts predict that we have already passed peak production of this vital natural resource, with the latest scientific evidence suggesting that our headlong rush to exploit the remaining reserves may have profound--and perilous--impacts on our future.
Chemistry is the science of interacting particles and the various states of matter. Developing a better understanding of the atomic model through experiments with gases, scientists discovered the Ideal Gas Law, developed phase diagrams, and learned about the properties of supercritical fluids. Today's chemists are exploring new ways to control the interactions of atoms, with the goal of making better hydrogen-powered cars and new technologies for the long-term, underground storage of carbon dioxide to reduce greenhouse warming. Part of the series Chemistry: Challenges And Solutions.
Host award-winning geoscientist, Richard Alley provides an eye-opening look at some of the world's most important case studies in smart energy. Alley travels to Spain and Morocco where large-scale solar farms and individual photovoltaic panels atop tents in the Sahara are beginning to bring the vast potential of the sun down to Earth. In Brazil, abundant natural resources are transformed into efficient, sustainable biofuel, making Brazil the only nation whose cars could keep running if all gasoline were to vanish. In Denmark, and West Texas, citizens have taken sustainability into their own hands by becoming stakeholders in wind turbines. And in China, he explores multiple sustainable energy technologies, including exclusive footage from GreenGen, the world's most advanced low-carbon emissions power generation plant. Part One Earth: The Operators’ Manual.
The bugs have their own language, and they use it to describe the new plant they have found. They watch the plant grow and change through the seasons. They celebrate as it blooms in the spring, and everyone leaves when winter arrives and the plant dies. Based on the book by Carson Ellis.
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