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.

Thanks to soaring shale output, the United States has been the world's largest natural gas producer since 2009. Higher recovery rates from major unconventional fields have helped unleash record ...

Traveling through the interior of the Earth, body waves arrive before the surface waves emitted by an earthquake. These waves are higher frequency than surface waves. P waves are also known as ...

This paper describes the fundamental principles of operation of a mixture injection system now called the Compression Wave Injection system (CWI). The system has been initially designed for use in ...

Diesel engines do their hardest work in the toughest jobs, from highway semis to construction equipment, and the reason they ...

A wave is defined as a continuous movement that transmits energy through matter or space.Energy can be conveyed from its source by a wave. The material through which the wave goes does not move with ...