Fictional Materials and Elements
- Hoffan drug A drug made by the Hoffans, which prevents the individual from being fed on by the Wraith and has the side effect of killing any Wraith who attempts to do so. It first appears in "Poisoning the Well", where the Atlantis Expedition is made aware of the drug. They quickly discover that the drug's positive benefits come with a 50% chance of death in the subject. The Hoffans distributed it among their population anyway, and the Wraith exterminated them as a result. The drug is later discovered and refined by Michael, reducing the fatality rate to 30%, and distributed to several random planets in Pegasus. To that end, in "Outsiders", it is revealed the Wraith are destroying any civilization associated with the drug so they can feed "indiscriminately" again.
- Maclarium An artificially-synthesized super-heavy element with an atomic weight of over 200, named after its fictional creator, Dr. MacLaren. Originally named HU-2340, in the episode "Red Sky" SG-1 attempts to introduce it into the sun of the planet K'Tau, hoping to neutralize foreign plutonium atoms and thus stop a reaction that would eventually render K'Tau uninhabitable.
- Naqahdah (/ˈnækwɨdə/, also spelled "naquahdah", "naquadah" or "naquaada") A rare, superheavy metal first depicted (but not named) as a quartzite-like "mineral" in the original Stargate movie. Its most basic use is as a weapon: naqahdah greatly amplifies energy, making it extremely potent if paired with explosives. Due to its unique properties, naqahdah forms the basis for many advanced technologies; the Stargates themselves are composed almost entirely of naqahdah. Naqahdah is also present in the bloodstream of the Goa'uld, which allows them to control their technology and sense the presence of other symbiotes. The Goa'uld have naqahdah mining operations on many planets; its refined form, weapons-grade naqahdah, is extremely valuable and often used as currency. Weapons-grade naqahdah is so dense that two Jaffa are required to lift a quantity the size of a couple of common housing bricks, which probably indicates that naqahdah is meant to lie in the island of stability. Alternate forms of naqahdah include liquid naqahdah, used to power Goa'uld staff weapons, and heavy liquid naqahdah, used to power Goa'uld AG-3 weapons satellites. Naqahdah is a superconductor. Naqahdah does not occur naturally in the Solar System.
- Naqahdriah (also spelled "naquahdriah" or "naquadria") A highly unstable variant isotope of naqahdah with considerably greater energy-production capacity — and correspondingly greater explosive potential. Naqahdriah emits radiation that can cause death, or in non-lethal doses brain damage, resulting in delusions or schizophrenia. The energy released by naqahdriah can catalyze nearby naqahdah into more naqahdriah in a self-sustaining reaction. Naqahdriah was thought to occur naturally only in the nation of Kelowna on the planet Langara, but was later discovered that it was created by a Goa'uld during an experiment. In Kelowna it is used to construct weapons of mass destruction for a cold war against two rival nations. The Kelownan Jonas Quinn brings naqahdriah to Stargate Command in protest of his government's weapons program. Naqahdriah allows the Earth X-302 fighter to be fitted with a far smaller hyperdrive than would otherwise be possible, although its instability limits the drive's utility to short, unguided jumps. The Earth ship Prometheus also initially uses naqahdriah in its hyperdrive, though the element's instability causes problems on its first flight. The Earth Mark IX "Gatebuster" nuclear bomb is enhanced with naqahdriah and is designed to detonate the naqahdah in a Stargate to create a massive explosion. The two powersources with enough power to dial the two Nine Chevron addresses are planets with Naquadria cores and stars.
- Neutronium A super-dense element key to Asgard technology and in the construction of human-form Replicators. The Asgard time dilation device on Halla is protected by a shell of solid neutronium. The new Asgard homeworld, Orilla, is rich in neutronium, which leads it to be targeted by the Replicators. The nanite Asurans are also based on neutronium, and the abundant deposits of neutronium in the crust of their homeworld proves to be the final key to their defeat in "Be All My Sins Remember'd". Earth has obtained supplies of neutronium, code-named "pre-assembled masonry panels", for its own nanite experiments.
- Trinium A fictional metal introduced in "Spirits", which is of great value to Stargate Command. Though weak and brittle in its raw form, when refined it is 100 times lighter and stronger than steel. After the iris over Earth's Stargate is destroyed in "A Matter of Time", a trinium-titanium replacement is installed. Trinium is used in the production of Earth's starships, such as the Prometheus. In "Evolution", a trinium dart is used to pierce the armor of a Kull Warrior. Trinium is also a key component in Tollan technology. The hull of the advanced Asgard ship O'Neill is composed of an alloy of naqahdah, trinium, and carbon, stated by Thor to be the strongest material known to his people.
Read more about this topic: Technology In Stargate
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