Gravity Magic

 A powerful branch of magic with a wide range of applications; essentially, it is the ability to distort (curve) space-time by manipulating gravity. This magic this can manipulate mass, crushing the enemy through brute force, and naturally generating micro-black holes.

The natural enemy of barrier-type magic, due to the large difference in energy requirement between “generating a black hole” and “maintaining a personal dimension which contains a black hole, breaking all physical laws inside the space.”

Theoretically, when light (electromagnetic waves) in a vacuum goes from one point to another, it takes the shortest and most direct course. In classical physics, light is a ‘straight line’. However, under the effect of any given amount of gravity, light is ‘curved’; thus, in space (space-time) affected by gravity, the shortest course between two points is not a straight line, because light is not exempt from this ‘curvature of space-time’ (gravitational lensing). You can say that gravity causes the curving of space-time.

Objects with more energy than mass (especially astronomical bodies) draw in material and electromagnetic waves in their vicinity towards their centre of gravity; normally, this would not cause any special phenomena. However, when the mass of the object is ‘M’, the universal gravitational constant is ‘G’, and the speed of light is ‘c’,

rg=2GM/c2

once this relationship (function) is established within the radius ‘rg’ (the Schwarzschild radius), the effect becomes different. As the ‘distortion’ from gravity becomes too large, light is not simply ‘bent’, but ‘falls’ into the object’s centre. Illustrated three-dimensionally, this would like a ‘hole’ – ie. a black hole.

As it is divided by twice the speed of light, the value tends be quite small. For example, an object the size of the Moon will have about a Schwarzschild radius of about 0.11mm. Of course, the power of Gravity Magic is to create gravity where there are no objects with mass. To put it another way, Gravity Magic is the ability to warp space-time without a mass/object medium. Again, if the strength of the gravitational influence from the source is ‘F’, universal gravitational constant is ‘G’, the mass of the source is ‘M’, the mass being influenced by gravity is ‘m’, and the distance between the two is ‘r’,

F=GMm/r2

Under the effect of Gravity Magic, as there is gravity there, ‘F’ cannot equal 0. If the left side does not equal 0, then of course the right side cannot equal 0, so even without actual mass, ‘M’ can never equal 0.
As the value of ‘M’ increases under the effect of Gravity Magic, the Schwarzschild radius also increases. Gravity Magic does not require a large space to operate, but that ‘M’ becomes the required value for a black hole to be created.

Schwarzschild radius

Schwarzschild Radius, also called gravitational radius, distance that defines the size at which a spherical astronomical object such as a star becomes a black hole. A black hole is an object so dense that not even light can escape the pull of its gravitational force (seeGravitation). If an object collapses to within its Schwarzschild radius, it becomes a black hole. The radius is named after German astronomer Karl Schwarzschild, who derived the first model of a black hole in 1916.

Nothing, not even a particle moving at the speed of light, can escape the gravitational pull of a black hole. Therefore, the Schwarzschild radius is the largest radius that a body with a specific mass can have and still keep light from escaping. The formula for the Schwarzschild radius of a body is R_s = GM/c², where R_s is the Schwarzschild radius of the body, G is a constant known as the universal constant of gravitation, M is the mass of the object, and c is the speed of light.

To find the equation for the Schwarzschild radius of an object, Schwarzschild needed to know how massive a body has to be to keep light from escaping and how light behaves in such a strong gravitational field. French astronomer Pierre Laplace found the equation for escape velocity, or the speed an object needs to overcome the gravitational force of a body. Laplace noted in 1800 that the escape velocity would be greater than the speed of light for an object leaving a very small, dense body. German American physicist Albert Einstein explained how light behaves in a strong gravitational field in his general theory of relativity, published in 1916. In 1916 Karl Schwarzschild derived the first model of a black hole with help from the work of Laplace and Einstein.

The Schwarzschild radius of a black hole marks its event horizon, or the boundary past which light can enter but not escape. Astronomers believe that once an object collapses to within its Schwarzschild radius, it continues collapsing until it becomes a singularity, or a point with infinite density and a radius of zero.

The sun has a mass of 2×10³⁰ kg (4×10³⁰ lb) and a radius of about 700,000 km (about 400,000 mi). Its Schwarzschild radius is about 3 km (about 2 mi). If the sun were to collapse into a sphere with a radius of less than 3 km, light from the sun would be trapped and the sun would become a black hole. The sun, however, is not massive enough for it to collapse to this size and become a black hole (see Star: Evolution of Stars).

An object with a mass equal to that of the earth would have a Schwarzschild radius of about 3 mm (about 0.1 in). For an object with Mount Everest’s mass, the Schwarzschild radius is only about 1×10^-11 mm (4×10^-13 in). Some astronomers believe that any black hole smaller than this would be relatively unstable and would evaporate quickly, releasing gamma rays (see X Ray). Astronomers have speculated that the mysterious sources of celestial gamma ray bursts may be evaporating primordial black holes.