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One is a federal commission and the other is a diamond. Unless you're referring to crystal structure: "FCC" is the abbreviation for face-centered-cubic, "BCC" is body-centered-cubic. Diamond is just cubic, which may seem bad, but this crystal structure is nearly indestructible.

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For diamond is there a four fold rotation axis if not why is then it is called a cube system?

Diamond does not have a four-fold rotation axis. It's called a cubic system because its crystal structure is cubic, with a face-centered cubic (FCC) lattice where the carbon atoms are arranged in a cube shape.


How can you tell the difference between simulated diamond rings and real diamond rings?

The difference can be seen using an item called a jeweler's loupe. It is a magnifying glass that shows the imperfections in a lab based diamond and one that has been made over thousands of years.


Can a jeweler use the angle of incidence index to distinguish between glass and diamond?

Yes, a jeweler can use the angle of incidence index to distinguish between glass and diamond. Diamonds have a higher refractive index than glass, so when light enters the stone at a specific angle, it will refract differently in a diamond compared to glass. This difference in refraction can help the jeweler determine the type of material they are dealing with.


What is the relationship between the FCC lattice constant and the radius of atoms in a face-centered cubic crystal structure?

In a face-centered cubic crystal structure, the FCC lattice constant is related to the radius of atoms by the equation: (a 4 times sqrt2 times r), where (a) is the lattice constant and (r) is the radius of the atoms. This relationship helps determine the spacing between atoms in the crystal lattice.


What is the relation between the path difference and phase difference?

The phase difference between two waves is directly proportional to the path difference between them. The phase difference is a measure of how much the wave has shifted along its oscillation cycle, while the path difference is a measure of the spatial separation between two points where the waves are evaluated.