Of pyramids and microwave ovens

Maybe 30 years ago when I was a kid I got given a book called Supernature by
Lyall Watson. Full of amazing things like ESP and cardboard pyramids being
able to sharpen razorblades and keep food fresh. Mainly hokum perhaps and
it's alleged he copied much of it and made the rest up.

A good read, but complete b*ll*cks. No scientific basis whatsoever.
Typical of the "there are things in this world that can't be explained"
brigade IMO.

Some time ago I had a plate of cold meat and salad half eaten and nowhere to
store until I could finish it off next day. Fridge was too full, I'm a bloke
so I don't do clingfilm and the flies would have got to it if I'd just left
it on a worktop. In the end, for lack of anywhere better, I shoved it in the
microwave oven and closed the door. Next day to my surprise everything was
as fresh as when I'd put it in there. A half eaten slice of buttered bread

My guess would be that, as opposed to a fridge, the inside of a microwave is
fairly sterile due to the heat. Maybe the limited airflow, a fridge is
pretty airtight.

One thing I'm sure of - it's nothing to do with pyramids!

was still soft. A sandwich left on a plate in the lounge will be hard in a
hour or two.

I've repeated the procedure many times since. In fact the microwave is now
my preferred place to store opened food overnight. It clearly isn't airtight
so that isn't the reason. Maybe in some dimension or other all microwave
ovens are pyramid shaped. Perhaps a breadbox or a closed cupboard would do
just as well but I haven't got the former and haven't tried the latter yet.

I'd guess the inside of a regularly used microwave is the most sterile
place in the home?

I don't think so. Feel the inside walls after cooking something, and
its only warm, ideal for breeding bugs. Unless its a convector microwave.

Try it sometime. Butter a slice of bread, cut it into three and put each on
a plate. Put one in the fridge, one on a worktop and one in the microwave.

I suspect that the bugs get the same treatment as the food, nicely done,
I don't think it's anything to do with the temperature of the chamber.

Leave overnight and see what happens.