Thaunuclear Particles

Also see Magic.

Thaunuclear Particles, commonly known as simply "Magic", are the material that makes up everything on Epona, as well as the planet itself. They are different to physical particles in that they are all metamorphic - a particle making up a rock can instantly change to become a particle that makes up a blade of grass. Thaunuclear Particles are all just one type of particle.

Thaunuclear Force is the "aura" a large group of particles creates. This is much more apparent in living beings than inanimate objects, as the particles within them are constantly moving and producing the energy needed to keep that creature alive. The Thaunuclear Force of living creatures can be sensed by a magic user with enough expertise.

Thaunuclear Scale
In the modern day, the concentration of Thaunuclear Particles within different species is quantified by the Thaunuclear Scale. This scale uses the Magnitude of Power format; each tier up is ten times more concentrated than the one before it.

Testing
There are various ways of finding out one's own Thaunuclear Scale. As stated above, a magic user with the right spell, or simply enough magical power, can sense another's place on the scale without assistance. Another route is to use a device that can scan magic. These have come in various forms throughout history, such as a cover placed upon the horn that the user then fires magic into.