Do ghosts defy the laws Conservation of Energy and Momentum, or do they contain matter and energy?
If we can perceive ghosts with our senses, then they must have engergy/mass. This is because our senses detect incomming forms of energy such as light (energy) with our eyes (light energy converted to electrical energy for our brain to perceive the ghost). This means ghosts will obey the laws of physics. If we are aware of the presence of a ghost and it can be shown that our senses have not detected the ghost, then the ghost is imaginary. If it can be shown that we are able to perceive ghosts with our senses and ghosts are not obeying the laws of physics then a new discovery will have been made in physics and you get to meet the King of Sweeden!
