Toaru Majutsu no Index

[Ryllharu]

In short: if you teleport objects to a different location, then sequencially teleporting them incrementally faster and faster as if they're traveling, the actual particle gains no speed because you are simply removing and placing an object elsewhere very quickly - you're not moving the object per sae, and doesn't gather speed nor momentum.

Like I said, this is based on my definition that teleportation doesn't transfer momentum. If yours is that you can make an object reappear travelling at X meters per second, then we have a disagreement on the definition of teleportation, or rather, the understanding of Kuroko's power.

I'll just use the shortened part for simplicity's sake if you don't mind too much.

I might as well commit to my theory, so here goes.

The theory I introduced claims that Kuroko's power relies on the use (when it is convenient), and abuse of the Uncertainty Principle.

Heisenberg's Principle uses the basis that it is impossible to both know the location and momentum of a particle. To ascertain the precise location of a sub-atomic particle, you bounce a wave/particle of light or whatever off of what you're trying to measure. In doing that, you know the location, but now you've changed the momentum, minutely as it is. Conversely, you can figure out the momentum, but then you're never sure where it is.

Kuroko uses this to displace objects. She knows exactly how something is moving (or not at all) so she forces its location elsewhere using the basic Esper principles Loli-Sensei explained. She'll keep flipping open figurative boxes of candy until the unknown location of the object or person is where she would rather have it be.

Conversely, when she moves the needles, she performs a follow up with her ability. She knows exactly where they are going to be (precise enough to pierce Sherry's clothes but not skin) so she begins flipping open figurative boxes of candy until the momentum of the needles is no longer certain (they were previously known to be stationary attached to her thigh) and when she lets go, they thrust downward.

The key point is Loli-Sensei's explantion. Espers are manipulating quantum theory to their benefit. Kuroko use/abuses the Uncertainty Principle through that.

@Archie:
Nah, now that I've gone overboard into physics, it's more of a college refresher.


EDIT:
To summarize: Using an Esper's ability to manipulate the uncertainty of a situation into a certainty that benefits them, Kuroko is using the uncertainties inherent in all particles due to Heisenberg's Principle to affect the location and momentum of whatever she sends.