Who Else Hates This?
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Metal content of the ceramic or glaze?
We won't sit down. We won't shut up. We won't go quietly away. YouTube, and My Mu[sic], Films and Windows Programs, etc. and FB
Metallic content in the ceramic glaze can be a fact it's more content of the ceramic, itself. Most "metallic content" is inert to the microwaves (transparent). After all, the ceramics, themselves, are primarily aluminum (tri)oxide and silicon dioxide. In an oxidized form, most metallic elements lose their metallic properties (rust is typically diamagnetic vs. iron, which is ferromagnetic). Not quite a guarantee. Magnetite is an iron oxide that is ferromagnetic - and is the original way that humans discovered magnetism. The primary absorbers of the microwave radiation in your oven are -OH bonds (a rotational resonance). The resonance means they absorb the radiation and try to rotate - which, banging around against other molecules, ends up as transnational and finally thermal energy. Besides water, other (particularly organic) molecules contain these bonds and bonds with (very) near resonant frequencies. Fats and oils (cooking, not motor), for example. Now in the raw, many metal oxides are, in fact, hydrated to varying degrees (as are a lot of compounds: e.g., copper sulfate is white but the most common form of it, the hydrate, is quite bright blue). During the scintering process, the water is driven off. Also, hydroxy bonds are dehydrated as the matrix of molten oxides is formed. Ceramic are, at least internally, anhydrous and amorphous metal oxide hunks. Transparent to microwaves. Metals, themselves, can act as an antenna, absorbing the microwaves and once absorbed, get really hot really fast. If they have a point, which is a place that would cause a local higher potential: sparks ! Smooth rounded things can act as shields (like aluminum foil to prevent local overheating - but I've never risked it). Thing metallic decorations put on a one-time beautiful display as they burn up (and become transparent to microwaves as oxides). Now I cannot dismiss 100% that a metallic coating is at fault but realizing it is competing with a massive (by comparison) sink of water (used to spread the delight of coffee into a greater portion of the universe) lead me to think it's intrinsic to the selection of materials in the starting clay (whether deliberate or as impurities).
"The difference between genius and stupidity is that genius has its limits." - Albert Einstein
"If you
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Hmmm. With comments like your previous one in this thread and this one, thanks, but I'll not be troubling you for advice. One bad joke(yours) turned into another(mine) before someone (you, of *all* people) suggested I cease to contribute. At least you ended with joke. :thumbsup:
I think it's fairly clear, even without the joke icon, what my intent was when I responded to Griff. The problem with your joke, is that there's plenty of people who would actually mean the sort of thing you wrote, and I took it as being kinda crass and offensive. And I don't recall you posting too much, so I'm not familiar with which type you may be. So there, you can use that as the benefit of doubt.
