Explosion

An explosion is a rapid increase in volume and release of energy in an extreme manner, usually with the generation of high temperatures and the release of gases. Supersonic explosions created by high explosives are known as detonations and travel via supersonic shock waves. Subsonic explosions are created by low explosives through a slower burning process known as deflagration. When caused by a man-made device such as an exploding rocket or firework, the audible component of an explosion is referred to as its "report" (which can also be used as a verb, e.g., "the rocket reported loudly upon impact".)

Causes

Natural

Explosions can occur in nature. Most natural explosions arise from volcanic processes of various sorts. Explosive volcanic eruptions occur when magma rising from below has much dissolved gas in it; the reduction of pressure as the magma rises causes the gas to bubble out of solution, resulting in a rapid increase in volume. Explosions also occur as a result of impact events and in phenomena such as hydrothermal explosions (also due to volcanic processes). Explosions can also occur outside of Earth in the universe in events such as supernova. Explosions frequently occur during bushfires in eucalyptus forests where the volatile oils in the tree tops suddenly combust.

The Slow Mo Guys

The Slow Mo Guys is a science and technology entertainment web series created by Gavin Free, starring himself and Daniel Gruchy and produced by Rooster Teeth Productions. It has been described as the biggest channel for slow motion videos on YouTube.

The series consists of a wide variety of things filmed in extreme slow motion using a range of Vision Research Phantom high-speed cameras, capable of shooting over 170,000 frames per second. The series premiered on 3 November 2010. As of January 2016, their YouTube channel has over 7.2 million subscribers and over 800 million video views.

History

In 2006, Gavin Free joined Green Door Films, the first production house in Europe to utilize Phantom digital high-speed cameras as a source of slow motion, working as a Data Technician and Camera Operator. He began working on adverts, music videos, and films such as Hot Fuzz. In 2008, he was hired to direct the seventh season of the Rooster Teeth machinima series Red vs. Blue. Afterwards, he had decided to make a move to Austin, Texas and work full-time for Rooster Teeth. He then created The Slow Mo Guys along with friend Daniel Gruchy in order to get a work visa.