Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea. Out in the depths of the ocean, tsunami waves do not dramatically increase in height. But as the waves travel inland, they build up to higher and higher heights as the depth of the ocean decreases.
4DX is a motion picture technology owned and developed by South Korean company CJ 4DPLEX, a part of the CJ Group. 4DX allows a motion picture presentation to be augmented with environmental effects such as seat motion, wind, rain, fog, lights, and scents along with the standard video and audio.
DX (Group) plc (trading as DX and DX Freight) is a British mail, courier and logistics company, with operations throughout the United Kingdom and Ireland.stablished in 1975, amidst the Royal Mail postal strikes of the 1970s, DX Group has been in private ownership since 2006 and combines DX Network Services Ltd, DX Secure (previously Secure Mail Services (SMS)) and, as of 15 March 2012, DX Freight, previously known as Nightfreight GB.