I would like to know about the safety of quartz infrared heaters. Particularly for an elderly person. She claims that back in the old days she heard that quartz is not good for you. Please comment on quartz and infrared heaters in general and their safety for an older person. I am looking at an expensive one which claims that the cabinet which houses the heating element stays cool. Thank you. What are the negative side effects of quartz?
Quartz is a crystal, so it is homogeneous. It has a constantly repeating structure. Glass is heterogeneous, or amorphous, it is made up of silicon oxide molecules all mixed up...
