Found 10 - 20 results of 24 programs matching keyword "brazil nut effect"
Astronomers in many parts of the world watched as Venus moved across the disk of the Sun, one of the rarest planetary alignments. The Exploratorium webcast this historic event from Greece. James Turrell studied optics and perceptual psychology in college, but gravitated towards art as his curiosity led him to investigate light itself. In this Webcast of a lecture, James Turrell discusses his experiences manipulating pure light and how it became his artistic medium. He reveals how this early work led him to discover Roden Crater in Arizona and to create his subsequent lifelong project of transforming the crater into an astronomical observatory. Why does a turkey continue to cook after it is out of the oven? How can you be sure to thoroughly cook the dark meat without drying out the white meat? Is stuffing really a good idea? Join us as we talk turkey with food expert and author Harold McGee. Discover why temperature is critical, and investigate different cooking methods: roasting, deep frying, barbecuing, and smoking. Watch as the best teachers on the planet battle it out for the title of Iron Science Teacher. This special edition will pit east coast teachers from Columbia University against teachers from the Exploratorium's Teacher's Institute. In this zany competition teachers will have ten minutes to create a science activity from a "secret" ingredient: milk cartons! For science fair competition taken to the third power, watch two veteran scientists as they battle head to head to determine who is the Iron Scientist. Home-town favorite, Exploratorium physicist, Dr. Dr. Paul Doherty will square off against heavy-weight contender, visiting Exploratorium Osher Fellow and Boston University astrophysicist Professor Kenneth Brecher. They have 5 minutes to teach their favorite activities, and then move on to the secret ingredients: marbles and panty hose Ever see a burning udder? Or a cement block crush a fax machine? Mechanical artistry takes new forms of whimsy as noted MIT sculptor/inventor Arthur Ganson creates tense moments of anticipation in Chain Reaction. Nine Aim High students explore shadow and light, and build their own energy machines. In this webcast, the students delve into energy transference and alternative energy sources like solar cells and wind power. Watch as the best teachers on the planet battle it out for the title of Iron Science Teacher. In this zany competition teachers will have ten minutes to create a science activity. This week’s “secret” ingredient: tennis balls! Watch as the best teachers on the planet battle it out for the title of Iron Science Teacher. In this zany competition teachers will have ten minutes to create a science activity. This week’s “secret” ingredient: Chanukah candles! On November 15th, 1999, for the first time in 25 years, the planet Mercury passed between us (in the western hemisphere) and the sun--an event known as a "transit." Here is one of five short streaming videos detailing the event.