The physical effects of these radiation induced mutations have never been seen in humans though. This natural rate normally is of little consequence, either being recessive or not health threatening, but some do cause significant health problems. Many studies have looked for the physical manifestations of the radiation damage in the children, grand children and great grandchildren of the Atomic Bomb survivors, and have not shown an increase above this natural rate. Microwaves are electromagnetic radiation and part of the Electromagnetic Spectrum, along with radio waves, infared, visable light, ultraviolet, x-rays, and gamma rays. Microwaves do not have enough energy to remove electrons from the orbits of atoms, putting it in the class of non-ionizing radiation.
Electromagnetic radiation is energy in transfer by electromagnetic waves.
These waves move at the speed of light. Microwaves have a range of frequencies of 0.03 to 300 GHz, placing it between Radio-frequency and Infared radiation in the Electromagnetic Spectrum. Microwave ovens often use 0.9 or 2.5 GHz for their heating frequencies. The second mechanism is due to the interaction between polar molecules in the absorber and the applied high-frequency electric field. The alternating electric field causes these polar molecules to oscillate back and forth in an attempt to maintain the proper alignment in the electric field.