Below mobile phone, wi-fi and microwave oven frequency ranges (0.9Ghz - 2.4Ghz), the 40Mhz band can still be used for cooking http://www.ctechinnovation.com/#st

Below mobile phone, wi-fi and microwave oven frequency ranges (0.9Ghz - 2.4Ghz), the 40Mhz band can still be used for cooking http://www.ctechinnovation.com/#sthash.wZafGNLl.dpbs http://www.ctechinnovation.com/#sthash.wZafGNLl.dpbs and is also used for radio controlled cars http://www.ukrcc.org/40mhz.html http://www.ukrcc.org/40mhz.html Above that, infra-red light, which starts at around 300 Ghz, is again used for cooking, and it also is used for changing channels on your TV. What do you think is special about mobile phone, wi-fi and microwave oven frequency ranges? (edited for clarity and stuff)