Radiation comes in many different forms

Radiation comes in many different forms. We are exposed to many types of radiation each day, not only form the technology that surrounds us, but also from natural sources. Find a source of radiation other than telephone and answer the  following questions 

1. Is the radiation ionizing or nonionizing?
2. Is the radiation released from this source expected to be dangerous? Why or why not?
3. Is this source of radiation natural or artificial?
4. Are there any applications for this type of radiation?