One of the most surprising predictions of Einstein's General Relativity is the existence of not just matter, radiation and other particle-based forms of energy, but the existence of gravitational ...

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.

A new MIT study has examined the possibility of acoustic-gravity waves – high-speed sound waves often generated by underwater earthquakes and landslides – acting as an early warning of tsunamis and ...

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 ...

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 ...

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 ...

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 ...

Shock Diamonds and Mach Disks in jet engines exhaust can be particularly evident and fascinating at night. The video below shows RAF Lakenheath’s Propulsion Test Cell during a test of an F-15E Strike ...