Apr 9, 2023An introduction to Seismoscopes!This interesting instrument (候风地动仪 in mandarin) was created by Zhang Heng (79-39 AD), an inventor, astronomer, engineer, scientist,...
Apr 8, 2023Word of the Day"Landslide"[land·slide] A sudden movement of geological material downhill because of the downward force of gravity. Landslides are triggered by...
Apr 3, 2023Word of the Day"Continental Drift"[kaan·tuh·nen·tl drift] The theory, introduced by Alfred Wegener, proposed that Earth's continents were originally one land mass. Then...