Found 0 - 10 results of 22 programs matching keyword "active seismic imaging of a volcano"
At the southern end of the Golden Gate Bridge, a construction project to rebuild the elevated freeway ramp formerly known as Doyle Drive is underway. Senior bridge engineer John Walters tours us through some of the new seismic technologies being installed, including a seismic joint designed to handle several feet of longitudinal movement and a spherical bearing that allows for three-dimensional movement. Walters also points out a temporary structure built over the historic Presidio Pet Cemetery to protect the grave sites while providing a platform for the construction overhead.
Project: Science in the City | Browse All
Date: November 23, 2011
Format: Expedition
Category: Everyday Science
Subject(s): engineering, city planning The ground under our San Franciscan feet is constantly on the move. Join Exploratorium educator Ken Finn as we visit some spots around town where exposed rocks reveal the tale of an active earth.
Project: Science in the City | Browse All
Date: January 12, 2011
Format: Interview
Category: Science in Action
Subject(s): Geology Watch ancient text revealed and read for the first time in a thousand years! Archimedes was one of the world's greatest scientific and mathematical minds. His thoughts were inscribed on goatskin parchment, but the letters and diagrams were scraped off and written over by Greek monks in the Middle Ages. Now, using an intense x-ray beam generated at Stanford University's linear accelerator, some of the original Greek text will be revealed for the first time in the modern world.
Project: Evidence: Ancient Writings Revealed | Browse All
Date: August 4, 2006
Format: Expedition
Category: Everyday Science
Subject(s): History, Technology
