Microwaves are really big waves and up to 1 metre long

[Bitcoinpro]

they are referenced as micro compared to radio frequency's though when compared to other wavelength's like that of light they are very big

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[BADecker]

If they're so big, they must be heavier than light waves.     

[Perle]

And how they are so long, are placed in a microwave oven? ))

[signup01]

And how they are so long, are placed in a microwave oven? ))

Maybe it bordered by oven materials (?)
That's why microwave use to warm up the food on microwave oven. But I think microwave is more dangerous than another wave.