3 ms·
> Is there some fractional-wavelength propagation? "Propagation" is probably not the right word, but fractional wavelengths can "leak" some amount of field. h
by itishappy 3y ago
> Is there some fractional-wavelength propagation?
"Propagation" is probably not the right word, but fractional wavelengths can "leak" some amount of field.
https://en.wikipedia.org/wiki/Evanescent_field https://en.wikipedia.org/wiki/Evanescent_field
- londons_explore 3y agoNotably, that field is powerful enough that microwave doors need to be about an inch thick. The rest of the inch is just empty space and a sheet of plastic to stop you putting your fingers into the evanescent field. Unfortunately there were a few microwaves sold recently in Europe which forgot that design element, and if you pointed at food while cooking it, you would cook your fingers too.