To work towards eliminating PFAS in everyday products, I envisioned a service where people could send in things they own to have them tested, and the results would be published on a website/app and searchable via barcode. Win/win: users get free PFAS testing, and the service gets free products to test to create a database.
I researched how to perform rigorous PFAS testing but it looks like the best method is PIGE which requires a particle accelerator, which aren’t exactly easy to come by.
Anyway just posting this in case anyone has thoughts or would be interested in working on something like this.
I always assumed it was because FM station bandwidths (200kHz) are much wider than AM (10kHz). AM's 10 kHz chops off a lot of human-hearable frequencies.