Temporalmage wrote:This spell stops bullets, energy blasts of all types, movement of all types, even sound can not pass through this area. The spell costs X PPE, but it don't matter if the spell stops a single hummingbird in flight, or a billion bullets (which fall harmlessly to the ground when the spell duration expires I might add) the cost in PPE is exactly the same.
This spell specifically breaks the laws of physics. "For every action there is an equal and opposite reaction". This goes out the window.
Wanna change those bullets to laser blasts? No prob. In the area effect the laser blasts simply disapate, going away. This applies to a single blast, or a full on barrage from a CS Battalion! The energy is negated, destroyed.
Without knowing what the spell is (way to support your argument), I can't read it.
However, the description of the spell isn't going to necessarily explain the physics behind the spell. Maybe the spell is simply a kind of energy redirection spell, it takes all the energy that enters the area and spreads it over an area, or even worldwide, raising the ambient temperature of the air by .00001 degrees. Or maybe the spell was put out there by an alien intelligence, knowing others would find it useful, and cast it, not knowing that the energy was being sent to the alien intelligence as food, or a means to help it store energy to prepare to break out of its prison.
There are lots of ways a magic spell could transfer energy (not destroying it) that the caster/players don't know about, because the writer wasn't thinking from a science standpoint and worried about explaining how the spell works within a world follow laws of physics.
As far as the law "for every action there is an equal and opposite action", that law may be flawed when applied to magic, because Newton was not living in a world where magic was known. If he was, he might have come up with a different law, or none at all.