this post was submitted on 24 Dec 2024
1431 points (99.3% liked)
Memes
8516 readers
1513 users here now
Post memes here.
A meme is an idea, behavior, or style that spreads by means of imitation from person to person within a culture and often carries symbolic meaning representing a particular phenomenon or theme.
An Internet meme or meme, is a cultural item that is spread via the Internet, often through social media platforms. The name is by the concept of memes proposed by Richard Dawkins in 1972. Internet memes can take various forms, such as images, videos, GIFs, and various other viral sensations.
- Wait at least 2 months before reposting
- No explicitly political content (about political figures, political events, elections and so on), !politicalmemes@lemmy.ca can be better place for that
- Use NSFW marking accordingly
Laittakaa meemejä tänne.
- Odota ainakin 2 kuukautta ennen meemin postaamista uudelleen
- Ei selkeän poliittista sisältöä (poliitikoista, poliittisista tapahtumista, vaaleista jne) parempi paikka esim. !politicalmemes@lemmy.ca
- Merkitse K18-sisältö tarpeen mukaan
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
For a few years I've saved this pic from previous similar posts in various places, no need even for freaking diamonds
Moisannaite gives the most rainbows, and I think they are gorgeous.
But I do love the sparkle of diamonds, and sometimes prefer it. Fortunately synthetic ones are easy to come by.
Is that a difference in the material, or is the Moissanite cut differently?
If Moissanaite just does that, then damn, that's pretty.
Moissanite is a completely different substance than diamond, it's a silicon carbide crystal, and it's also made synthetically so no worries about exploitation mining, it's also cheaper
Until De Beers starts synthesizing it.
Yeah what conditions are these scientists working under?
I'm asking about the light. The lightshow produced by a crystal is down to both the optical properties of the material, but also the geometry of how it was cut.
The image is really cool, but it only demonstrates a difference if the moissanite was cut into the exact same shape as the diamonds.
A prism doesn't split light because of the material its made of, but because of its shape.
Moissanite has a marginally higher index of refraction than diamond so the "ideal" cutting geometry would be different. This looks like a misleading demonstration intended to market something. They appear nearly identical in normal conditions
That's what I was immediately thinking.
Getting pretty colors out of a clear crystal is more about how it was cut, than what it's made of.
Unless it's something like opal that produces lightshows through completely different optical effects.
Isn't it both shape and material? The refractive index of the material is important in determining how much the light bends at the interface.
Yes, but a clear crystal is a clear crystal.
If you want to split light you can do what regardless of refractive index (as long as it isn't zero), you'd just need to cut different angles and/or project the light onto a surface that's closer/farther to get the same effect using a different material.
No, different materials have different refractive indices, even if they're both "clear crystals." Maybe the examples given are very close in refractive index, but they still differ, therefore split light differently. https://en.wikipedia.org/wiki/List_of_refractive_indices
I'm not saying it's the entire difference, but it certainly comes into play. It could be that the more "explosive" light example is cut identically, but held slightly askew versus the others.
Point is, it's not just the cut that impacts the result.
...
That's literally my point.
I'm saying you can't tell the difference between two materials unless they are cut the same.
If they are cut differently to achieve the results you are seeing, you can't tell whether the difference is because of the cut, or because of the material.
That makes sense. It wasn't coming across in the earlier comments.
Ah, i misunderstood, yeah, there's got to be some rigging in that demo pic now that you mention it, however if Moissanite is essentially a drop-in replacement for diamonds in jewelry that is cheaper and looks even slightly nicer, which seems to be the case, then all should be well, doubly so if it kills the profits of De Beers. I'd ask to see the contrast IN PERSON if i was shopping for rings today though, nothing beats that.