On Wed, 30 Nov 2016 14:36:51 -0800 (PST), ItsJoanNotJoann
wrote:

On Wednesday, November 30, 2016 at 4:23:51 PM UTC-6, micky wrote:

How long does it take a microwave oven to warm up?


Unless I've missed something, microwave ovens don't heat
up.

The m-oven dont heat up! The food heats from the inside and m-waves
cause the water molecules to heat. Food has to have moisture in it in
order to heat up. If you put something in there that has no moisture, it
wont get warm or hot. Thats why a plastic bowl wont heat up, only the
food inside of it gets warm.