"Active Denial Technology uses radio frequency millimeter waves at a
frequency of 95 gigahertz. Traveling at the speed of light, the
millimeter wave directed energy engages the subject, penetrating the
skin to a depth of only about 1/64th of an inch, or the equivalent of
three sheets of paper. The beam produces an intolerable heating
sensation, compelling the targeted individual to instinctively move."
https://jnlwp.defense.gov/Press-Room/Fact-Sheets/Article-View-Fact-sheets/Article/577989/active-denial-technology/
My question is how does this beam transmit its energy to the skin:
resonance, kinetic energy?
Potential interest here is 5G, using similar frequencies.
