Liha töötlemine
(and hence longer duration) microwaving,
Dielectric
cycling of power on and off to allow equal-
This is split into two frequency bands: radio ization periods, and cooling of surfaces with
frequency and microwave. The first uses air or liquid nitrogen. Penetration depth
more typical electrical techniques, with con- depends upon temperature and frequency,
ductors, electrodes, etc. The second relies being generally much greater at frozen tem-
more on electromagnetic wave technology, peratures and greater at lower frequencies.
with waveguides to “beam” the waves into a
cavity.
Ultrasonic
Radio Frequency In some work, ultrasound has been merely
used to assist heat transfer during immersion
annaabi.ee 
