olsonexiNov 30, 2023

Why do many microwave ovens hum in an interval of a minor 7th?

https://lemmy.wtf/post/2437281

Why do many microwave ovens hum in an interval of a minor 7th? - Lemmy.wtf

Something that I’ve noticed across most of the microwave ovens that I’ve used is that when they hum while cooking food, I can pick out 2 distinct tones. One of them is pretty clearly 60 hz from the AC power frequency. The other is consistently a minor 7th above that (which would be somewhere around 106-108 hz depending on the exact ratio). What causes this 2nd frequency to be produced?

Show threadMr_BlottNov 30, 2023
Do people actually use microwaves for cooking or is that just a meme?
Show threadCameronDevNov 30, 2023
What do you use it for?!
Show threadMr_BlottNov 30, 2023

Collecting dust. Popcorn.

Literally nothing is cookable in a microwave without it being disgusting

Show threadCameronDev

Disgusting how?

I mostly use mine for reheating stuff, but cook the occasional two minute noodles or frozen pie. Never had it be disgusting, at worst it can be cold if not done long enough. Cutting the food up and stiring it around halfway through helps.

Nov 30, 2023 at 9:27amWeb
Show threadaccideathNov 30, 2023

Yup, also primarily use it for reheating food. Sometimes, when I’m lazy and just want sth to eat, I’ll make myself microwave potatoes. And I also use it to defrost frozen vegetables or fruit sometimes.

However, when I was living in a one bedroom apartment, which didn’t have an oven in the kitchen-corner, I had a microwave with integrated oven and with that I was able to bake myself anything that fits into a pizza sized round baking tray. Still love that thing. It’s a 30 y/o hand me down Siemens from my uncle that still works perfectly. It’s also rather large (about twice the size of a normal microwave) and sadly doesn’t fit into my current kitchen…