Roger Stephens fine art artist artiste peintre

http://www.philosophy-index.com/philosophy/mind/mind-body.php The Mind-Body Problem The mind-body problem is an ongoing problem in the philosophy of mind and in metaphysics, concerning the nature of the relationship between the mind, or conciousness, and the physical world. The mind-body problems asks a number of questions: Are the mind and body separate substances or elements of the same substance? What is their relationship to each other? What is conciousness? And how can conciousness arise out of ordinary matter? There are a number of responses to the mind-body problem, though none have universal acceptance. A number of these positions are outlined below: Dualism , the position that the mind is essentially not physical, and exists separately from the body. Dualism comes in various forms: Interactionism , which states that the mind and body have causal interaction. Occasionalism , which states the apparently causal links between mind and body are actually divine interven...

A  photon  is an  elementary particle , the  quantum  of all forms of  electromagnetic radiation  including  light . It is the  force carrier  for  electromagnetic force , even when  static  via  virtual photons . The photon has zero  rest mass   and as a result, the  interactions  of this force with matter at long distance are observable at the  microscopic  and  macroscopic  levels. Like all elementary particles, photons are currently best explained by  quantum mechanics  and exhibit  wave–particle duality , exhibiting properties of both  waves  and  particles . For example, a single photon may be  refracted  by a  lens  and exhibit  wave interference  with itself, and it can behave as a particle with definite and finite measurable position and  momentum . The photon's wave and quanta qualities are two observabl...