In this episode Robert Blackley, Senior Health Physicist and Radiation Services Manager at ANSTO returns to discuss non-ionising radiation with host Mark Reggers. As opposed to ionising radiation, non-ionising radiation is a source of relatively low-energy radiation that does not have enough power to ionise atoms or molecules and unable to change the composition of a substance. Non-ionising radiation is found in a wide range of occupational environments, although considered less dangerous, overexposure can pose considerable health risks to potentially exposed workers if not suitably controlled.