The earliest scientists first observed the waves that earthquakes produce before they could accurately describe the nature of earthquakes or their fundamental causes, as discussed in Lessons 1–5.

Each image was processed and projected, and the 0.5 μμm wavelength was selected to detect the wave packets. Images A, B, D, F, and G are at Ls≈150°; Image C at Ls≈285°; Image E at Ls≈245°. Image G is ...

Two weeks before Christmas in 1978, the cargo ship MS München encountered a fierce storm in the North Atlantic. Although the captain couldn’t evade it, the forecasted waves and winds should have posed ...