Railgun

The term Railgun (超電磁砲) is used to refers to three different things: the strongest Electromaster-type power in Academy City, the signature move produced with said power and the Esper that possesses both of them.

Psychic Power
Classified as Level 5, it is renowned as the strongest Electromaster series psychic power. Represented by an electric shock that boasts an output of 1,000,000,000 volts, has the ability to observe and manipulate electric currents and electromagnetic fields.

Offensive applications includes lightning spears and thunderbolts, powerful electromagnetic waves, and a chainsaw-like sword of ironsand. It might also be capable of inserting electrons in the positive ions of gases that turned into plasma in order to restore their atoms. Also, though the projected offensive power catches much attention, since it is capable of reading and controling electric signals, it can also perform many forms of cracking such as releasing electronic locks and other kinds of security, hacking databases with a portable terminal, remote destruction of research institute's material by using a electronic network as a medium, stealing of the controls of a security robot for remote operation and even causing trouble in traffic lights so to create a traffic jam. Also, it can also visualize electromagnetic power lines - although not in close ups - and, consequentially, is capable of skimming.

Furthermore, there is a broad range of applications regarding the operation of magnetic forces, starting with sword of ironsand. It also excels at defensive actions such as gathering the metals in the surroundings (such as manhole covers, water pipes, billboards and ironsand) to make a shield, or manipulating a shield of ironsand that moves freely to defend against ground excavating-like attacks. Other than that, it can also be used as to assist in movements such as standing on and running while being attracted by the sides of a highway's pillar, to throw the manipulated ironsand in the form of a small tornado and, more aggressively, to tear off track rails and shower them on a target.

In the Toaru Kagaku no Railgun SS, water molecules were collected using the application behind the sword of ironsand and six sparkling pale wings of various sizes were expanded. From these blade-shaped wings, the water molecules that formed them were consumed and sprayed like a jet burner to make flight possible. However, for the use of these wings, the water molecules in the atmosphere must be distributed at an exquisite ratio, so its use is limited. In the OVA, it has been established that is possible to float in a narrow alleys while emitting electricity and move - at the very least - in a speed faster than ordinary humans can run. For movement in mid flight, because a guardrail was used as foothold for a turn, there is a possibility that it is impossible to perform fine maneuvers.

Also, because of constant emission of electromagnetic waves, there is a tendency of being avoided by animals such as cats. But that is not that bad, as since it can perceive objects in the surroundings by making use of rebounded waves just like a radar, it is possible to deal with attacks from blind spots. Also, an electrical circuit was connected through an electric shock during contact with Kiyama Harumi, accomplishing the feat of reading Kiyama's memories. However, this was by no means an intentionally created phenomenon and it is unknown whatever it was fully comprehended or not.

Signature Move
Performed by accelerating a coin through Lorentz forces and shooting it at three times the speed of the sound. In reality, a true railgun fires projectiles at a speed five to seven times faster.

Because the coin ends up melting from the atmospheric friction, the maximum range is 50 meters. Since attempts to directly measure it result in the destruction of the psychic powers measurement instruments, even when going easy a lot it still possesses such a power that measurement is impossible without the further use of a water pool to drastically decrease its power. A direct hit will partially destroy the surface of an iron bridge; it can pierce through around 20 steel frames of a building under construction and still create a crack in the wall of another building; when fired at an angle against a building, it opens an air hole of 2 meters of diameter in walls, floor and ceiling; it erases an Aero Shooter's vacuum blade (although its power is unknown, it should at least a minimum force so it can be employed as an attack); through such descriptions one can conjecture about the scope of its power.

Other than a coin it is also possible to use objects coated in ironsand as projectiles. Such method was only used once against Mixcoatl, but as the maximum altitude at the time of the shot was around 200 meters, it flied to incredible distance, to the point of passing over the horizon. It is unknown how much power such exclusive bullet would hold if fired seriously.

Incidentally, here are the values that appeared in Toaru Kagaku no Railgun during the pool measurement test:
 * Projectile's Initial Velocity: 1030m/sec
 * Rapid-fire Capacity: 8 shots per minute
 * Impact Distribution: 18.9mm
 * Comprehensive Evaluation: Level 5