So I have one of those Bluetooth thermometers for meat and other foods. I heard it wasn’t supposed to work in my oven, because it’s a combination of a regular oven in the microwave. Since microwaves are supposed to be a faraday cage, it was my understanding that no radiation should be able to get out.
On the other hand, Bluetooth sensors are so incredibly sensitive, that my microwave might still be well within safe margins in terms of escaping microwaves.
It’s worth pointing out that the reception on my Bluetooth thermometer doesn’t work very well, but if I hold my mobile phone in certain places near the oven and will shortly catch a signal.
Should I be worried and buy a new oven?
Unfortunately by the time it’s heating up your hand, it may have already done permanent damage to more sensitive body parts. Your eyes are particularly sensitive to microwaves as they don’t have the blood flow to carry away heat. Causing cataracts. When I worked with RF it was one of the things they warned me of.
Yes this is a good point, you don’t want i.e. tiny capillaries in areas with low circulation to be heating up before you notice other places.