I am getting my fiance a wedding band.He wants a black or almost black band he is left handed so he wants something that will not scratch and is very strong. I was looking a some rings and I know that tungsten is very strong and scratch proof. Is ceramic as resistant?
Edmond, a laser doesn't scratch anything, it melts. We're talking physical properties, not plasma properties. At NORMAL temperatures of 70-90 degrees F. If you don't understand the question, quit answering. Id imagine tungsten carbide can scratch itself. Much like an ape. :) - The Gremlin Guy -
Ceramic is a generic term, whereas Tungsten is an actual transition metal that is listed on the periodic table of the elements. It's symbol is W and it weighs 183.8 amu in the most abundantly occurring form. If he wants something strong and durable, I would go with the Tungsten. 183.3 is a very heavy amu, and it will probably be stronger than any ceramic rings. But you should see what percentage of the metal it islike is it 100% pure Tungsten, or is it a blend of Tungsten and something else? If it is a blend, then it could go either way.
Please tell us how one would go about looking for fossils under 10,000 feet of rock. As a rule you have to wait for erosion or geological activity to bring fossils to the surface. Think before you make unwise assumptions.
Oil and coal come to mind as it is highly profitable to dig 1000's of feet to get them. Digging 1000's of feet to find fossils otherwise is not profitable and thus most research grants will not fund them. You really should get a better grasp on geology as we know that both erosion, tectonics, and other forces all work to expose various layers of strata and almost anyone with a high school exposure to geology should be able to tell you why your attempted argument is completely based in ignorance.
Ceramic is a generic term that covers several formulations, some stronger than tungsten metal (like tungsten carbide) and some not so strong (china, for instance, is a ceramic, and you will agree, not the strongest). Are you thinking about those guys (see link) ?
