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A programmable material that the Transformers are made from. Tritanium: Star Trek: The fictional metal tritanium was referred to in many episodes as an extremely hard alloy used in starship hulls and hand-held tools. Eve Online: A versatile material; the primary material used in the construction of virtually all star ships and star ship components.
Apocalyptic fiction is a subgenre of science fiction that is concerned with the end of civilization due to a potentially existential catastrophe such as nuclear warfare, pandemic, extraterrestrial attack, impact event, cybernetic revolt, technological singularity, dysgenics, supernatural phenomena, divine judgment, climate change, resource depletion or some other general disaster.
Jacques Francis, also known as Jaques Frauncys, (c. 1527 – after February 1548) was an African salvage diver who led the expedition to salvage King Henry VIII's guns from the Mary Rose. He was the first African to give evidence in 1548 before a court.
A pneumofathometer is a depth gauge which indicates the depth of a surface supplied diver by measuring the pressure of air supplied to the diver. Originally there were pressure gaues mounted on the hand cranked diver's air pump used to provide breathing air to a diver wearing standard diving dress , with a free-flow air supply, in which there ...
Depth limit for a French level 2 diver accompanied by an instructor (level 4 diver), breathing air. [citation needed] 50 m (160 ft) Depth limit for divers breathing air specified by the British Sub-Aqua Club and Sub-Aqua Association. [16] 60 m (200 ft) Depth limit for a group of 2 to 3 French Level 3 recreational divers, breathing air. [17]
Black-water diving is mid-water diving at night, particularly on a moonless night. The environment is referred to as black-water. [7] [8] The term black-water may also be used to refer to diving in zero visibility, or in sewage. Christopher Newbert, author of Within a Rainbow Sea, (1984) is credited as an early black-water diver. [9]
The Bathysphere on display at the National Geographic museum in 2009. The Bathysphere (from Ancient Greek βαθύς (bathús) 'deep' and σφαῖρα (sphaîra) 'sphere') was a unique spherical deep-sea submersible which was unpowered and lowered into the ocean on a cable, and was used to conduct a series of dives off the coast of Bermuda from 1930 to 1934.
Material properties (size, color, texture) of fulgurites vary widely, depending on the size of the lightning bolt and the composition and moisture content of the surface struck by lightning. Most natural fulgurites fall on a spectrum from white to black. Iron is a common impurity that can result in a deep brownish-green coloration.