Symptoms of peritoneal mesothelioma include: 1  Abdominal pain and swelling. 2  Loss of appetite (anorexia) 3  Weight loss â especially if unexpected or sudden.  Ascites â a buildup of fluid in the 1  abdomen. Anemia â most often in women.  Bowel 1  obstruction. 2  Fever.  Nausea.
a wave propagated at the speed of light by the periodic variations of electric and magnetic fields. electromagnetic wave. A wave of energy consisting of oscillating electric and magnetic fields. Radio waves, light waves, and x-rays are electromagnetic waves.
Mechanical waves use the substrate to move along (the medium). Electromagnetic 'waves' are a combination of a particle and a wave (they have the same properties of both) == photons. Electromagnetic waves encompass light, microwaves, radio waves, and gamma waves (to name a few). Since EM particles act as waves, but also have a mass they actually exist in the Space-Time continuum and can travel without a medium.