This rather remarkable website contains a great collection of resources
for web-based instruction and demonstrations of geology concepts. The
collection includes, under Classroom demonstration, the very useful
SeisMac 3.0, which is an application for Mac OS X that turns a laptop
computer into a " low-resolution strong-motion accelerometer," or a
basic seismograph. It works by accessing the computer's Sudden Motion
Sensor in order to display real-time, three axis accelerations graphs.
Visitors can use the application to watch the seismic waves go up and
down just by tapping their feet on the floor nearby. Other resources
include Virtual Earth (an "interactive minicourse on thermal
convection") and a link to Geology in the news, which collates important
news stories with a geological theme.
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