EM waves are also classified according to their ability to ionise a material in their path

All waves up to light waves in the visible spectrum are non-ionising waves or radiation

All waves from ultraviolet to g-rays are ionising radiation. Ionisation only occurs if the radiation has sufficient intensity or power. Low power exposure over a long period of time can cause some damage

An ionising wave such as ultraviolet, X-rays or g-rays at sufficient intensity can knock electrons off the orbit of molecules in a material

The material is called ionised or charged



Microwave energy is weaker in a material than light. It can not ionise molecules in its path. It produces heat in materials if the molecules are polar so that they can be rotated to and fro with every wave cycle

This is because microwaves are alternating current just like AC voltage. The polar molecules try to follow the polarity of the microwaves at a fast rate

If there is resistance to this cyclic rotation, heat will be generated. This heating is immediate and volumetric


Processing with high power microwaves, supply of microwave circulators, supply of microwave directional couplers, supply of high power impedance analysers

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Microwave Technology

  What are microwaves?

  EM Energy

  Non-ionising Radiation

  Microwave Absorption

  Microwave Quantum

Microwave Simulation

  Maxwell's Equations

  Dielectric Measurement

  Properties of Water

  Properties of Ethanol

  Standing Waves

  Travelling Waves

  Field Patterns


Microwave Machines


  Timber Drying

  Timber Moulding

  Oil Extraction

  Liquid Steriliser

  Wheat Disinfection

  Bean Sterilising

  Fish Thawing

  Bread Thawing

  Rice Treatment


  Floorboard Drying

  Chemical Processing

  Ceramic Kiln

  V.F.M Kiln

  Tyre Recycling

Microwave Research

  Metal Extraction

  Sapstain Treatment

  Growth Stress

  Microwave Ignition