Microwave absorbing performances of ultra-thin metallic films were analyzed by resonance absorbing principle and transmission line theory.

Ions trapping and detection of radio frequency resonance absorption;

Relativistic effects on resonance absorption in laser_plasma interaction;

Accordingly,the intensity of resonance absorption is obviously enhanced.

A experimental tentative idea for detection Neutrino by resonant absorption law of the matter to rays;

Working principles and specifications of a liquid film resonant absorption mechanical spectrometer were presented.

The excitation of plasma waves, the acceleratioin of electrons and the generation of suprathermal electrons in the processes of laser plasma resonant absorption have been simulated using the developed two dimensional multi time scale fully electromagnetic relativistic particle simulation computer code.