Forces of interaction between macroscopic objects in the field of electromagnetic wave

The mechanical action of electromagnetic radiation on material objects (pressure or rotation) is exhibited in many physical phenomena. It plays an important role in the processes inside the stars. It influences the orbits of small particles which move in the space. In the physics of condensed media the electromagnetic (ponderomotive) forces are exhibited in the electrostriction effect. The radiation pressure a plays great role in the interaction of laser pulses with plasma in the laser-heating nuclear fusion machine. It is used for the measurement of the power of microwave and laser radiation. Ponderomotive action of the electromagnetic field on the isolated objects in free space has been investigated previously, both theoretically and experimentally