On Thursday, December 1, 2016 at 2:58:19 PM UTC-5, Dave Smith wrote:
> On 2016-12-01 2:15 PM, Je�us wrote:
> > On Thu, 01 Dec 2016 14:06:45 -0500, Brooklyn1
> > > wrote:
> >
> >> notbob wrote:
> >>>
> >>> Are there still ppl in rfc that actually believe a microwave oven
> >>> heats from the inside out?
> >>
> >>
> >> Depends on the food... fats heat quickest so if a slice of pizza the
> >> cheese heats first.
> >
> > Microwave ovens work by exciting the water molecules in food, so I
> > doubt the fat heats up the quickest.
>
> From what I read, they work by exciting molecules and producing heat.
> For some reason, they work faster on liquids than then do on solids,
> which is why they sometimes seem to work from the inside out. The pop
> tart was a good example because the outside crust is mostly flour and
> fat while the inside has more liquid. It heats up faster in the middle
> because of the liquid.

Many "solids" have a lot of entrained air. Not much contact between
molecules bumping against each other.

Cindy Hamilton