Your old microwave oven had a slow turning aluminum stirrer fan in the roof, over the outlet of the magnetron’s waveguide. It helped bounce the microwaves evenly over the oven cavity. A cheap glass plate and a cheaper motor replace that, and it makes the plebs think something more is happening since they can see movement.
The better ovens used to have both.
Your old microwave oven had a slow turning aluminum stirrer fan in the roof, over the outlet of the magnetron’s waveguide. It helped bounce the microwaves evenly over the oven cavity. A cheap glass plate and a cheaper motor replace that, and it makes the plebs think something more is happening since they can see movement.
The better ovens used to have both.
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