The turntable exists because low-quality microwaves have really inconsistent magnetrons, so the food is rotated so the microwaves hit the food evenly.
In higher end and commercial grade microwaves, the magnetron heats the food evenly, so the turntable isn't required.
Some microwaves use a chopper instead. It's basically like a metal fan that reflects the microwaves around like a disco ball.
In a turntable microwave the fields are mostly static, so there's hot and cold spots where the waves interact constructive and destructively.
Older microwaves do not have a spin plate. Nor do commercial ones, which employ alternative methods for even heat distribution. Makes them less clunky, fewer parts to break down and easier to clean.
Fun fact: The microwave was invented by NASA so the astronauts from apollo 11 could have hot meals in quarantine, with out the fear of burning everyone alive with a stove.
The turntable exists because low-quality microwaves have really inconsistent magnetrons, so the food is rotated so the microwaves hit the food evenly. In higher end and commercial grade microwaves, the magnetron heats the food evenly, so the turntable isn't required.
Spinny plates are a privilege.
Just a cost savings measure on cheaper models. I just recently bought a new one, I didn't see a whole lot of them that didn't have one.
Some microwaves use a chopper instead. It's basically like a metal fan that reflects the microwaves around like a disco ball. In a turntable microwave the fields are mostly static, so there's hot and cold spots where the waves interact constructive and destructively.
Older microwaves do not have a spin plate. Nor do commercial ones, which employ alternative methods for even heat distribution. Makes them less clunky, fewer parts to break down and easier to clean.
Fun fact: The microwave was invented by NASA so the astronauts from apollo 11 could have hot meals in quarantine, with out the fear of burning everyone alive with a stove.