this post was submitted on 12 Oct 2023
647 points (96.0% liked)

memes

9683 readers
3907 users here now

Community rules

1. Be civilNo trolling, bigotry or other insulting / annoying behaviour

2. No politicsThis is non-politics community. For political memes please go to [email protected]

3. No recent repostsCheck for reposts when posting a meme, you can only repost after 1 month

4. No botsNo bots without the express approval of the mods or the admins

5. No Spam/AdsNo advertisements or spam. This is an instance rule and the only way to live.

Sister communities

founded 1 year ago
MODERATORS
[email protected]
[email protected]
[email protected]
647
Why does this happen? (startrek.website)
submitted 11 months ago by [email protected] to c/[email protected]
100 comments fedilink hide all child comments
 
you are viewing a single comment's thread
view the rest of the comments
[โ€“] [email protected] 6 points 11 months ago (2 children)

A simple refutation is that metal gets hot in the microwave, and it has no water in it. Microwave radiation heats many things, not just water

[โ€“] doctorn 1 points 11 months ago* (last edited 11 months ago) (1 children)

Only at the points it discharges the waves electrically. All the rest of the metal usually stays quite cold,... I've taken out plenty of forgotten spoons in my lifetime. ๐Ÿ˜… Hence why microwavable metal is a thing. (Like the metal rack the usualky cones with combi-ovens.) Metal is a good heatconductor though, so microwavable metal will easily get hotter than the food heating it (much like your car's metal exterior getting hotter from the sun than it's environment), yet if you microwave that metal on its own it will not heat up at all...

[โ€“] [email protected] 0 points 11 months ago (1 children)

Metal is a good heatconductor though, so microwavable metal will easily get hotter than the food heating it

That's... not how heat conduction works. Something can't get hotter than the thing that's heating it. What's heating the metal is the microwave radiation.

yet if you microwave that metal on its own it will not heat up at all...

But

It does

Metal that's designed to be part of the microwave, like a rack or the walls, is designed specifically to avoid heating up. But like, a spoon by itself on the turntable will definitely get hot if you microwave it

[โ€“] doctorn 1 points 11 months ago* (last edited 11 months ago) (1 children)

It was simplified for ease. Metal indeed does not actually get hotter than its environment, but due to it's heat conductivity it has the ability to relay any surrounding heat when any spot gets cooled down (like when you touch it), it will transfer surrounding heat-energy to the colder spot, which it can do better than most other materials.

Either way, any spoon I ever accidentally microwaved remained quite cold tbh, though I have not tested this out over extended periods of time. Any heated food touching it will still be the main source it will draw energy from when touched, though...

[โ€“] [email protected] 1 points 11 months ago* (last edited 11 months ago) (1 children)

I don't know how we manage to live under different laws of physics then, because I have definitely touched metal that had been in the microwave and gotten hot, and there are videos of people putting metal in the microwave showing it getting hot without sparking. Unless me, everyone I know, those guys, and all their commenters are all lying, metal will most definitely get hot in the microwave

Am I getting sharks are smoothed?

[โ€“] doctorn 1 points 11 months ago* (last edited 11 months ago) (1 children)

Yeah, if you look it up on Google you will find above definition, though... ๐Ÿคทโ€โ™‚๏ธ

[โ€“] [email protected] 1 points 11 months ago

Look what up on google???

[โ€“] [email protected] 0 points 11 months ago* (last edited 11 months ago) (1 children)

Different principle entirely but ask a physicist, I'm not telling you to trust me. I'm telling you to look, learn, and experiment.

Ed: Here's a hint. The first microwave was called a radarrange.

[โ€“] [email protected] 1 points 11 months ago* (last edited 11 months ago) (1 children)

But I have experimented... I've melted plastic spoons in the microwave before. Where's the water in plastic?

Edit: that's not really a hint. What does radar have to do with how microwaves heat things?

[โ€“] [email protected] 2 points 11 months ago* (last edited 11 months ago)

Those aren't microwave safe then, other materials react as well but microwaves are tuned to shame water really well and most everything else not as well.

Yes it is. Microwaves came from radar and radar works on the same principal.

Ed:

In 1945, the heating effect of a high-power microwave beam was accidentally discovered by Percy Spencer, an American self-taught engineer from Howland, Maine. Employed by Raytheon at the time, he noticed that microwaves from an active radar set he was working on started to melt a Mr. Goodbar candy bar he had in his pocket. The first food deliberately cooked with Spencer's microwave oven was popcorn, and the second was an egg, which exploded in the face of one of the experimenters.[12][13]

To verify his finding, Spencer created a high-density electromagnetic field by feeding microwave power from a magnetron into a metal box from which it had no way to escape. When food was placed in the box with the microwave energy, the temperature of the food rose rapidly. On 8 October 1945, Raytheon filed a United States patent application for Spencer's microwave cooking process, and an oven that heated food using microwave energy from a magnetron was soon placed in a Boston restaurant for testing.