# Tag Info

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Given adequate oxygen, certainly. From here, for instance, you can get an approximate maximum flame temperature for kerosene burning in air, and a higher concentration of oxygen will increase the temperature. At 3800 F, this is about 1000 F above the melting point of steel, so melting steel with jet fuel (kerosene) is entirely possible. Of course, "Common ...

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Crystals have internal energy including some energy associated with molecular vibrations. Amorphous materials have internal energy including some energy associated with molecular vibrations. In addition to molecular vibrations, crystals can exhibit mechanical (macroscopic) vibrations. An example of a resonant macroscopic vibrator is a tuning fork. But, ...

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As far as I know, there is zero physics in "Crystal Energy", which if I understand what you mean, is related to Crystal Healing. There is a good bit of validity to the placebo effect and belief, so a person believing in something, whether the practitioner or the patient, can have an effect or the impression of an effect, but that's not physics either. ...

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This colour change effect occurs when the strands of plastic material, the polymers in the plastic, start to stretch as you twist the plastic. As they do so, this changes the way the light is reflected from the plastic. Say for example, you chew a biro top, by doing so, the Refractive Index of the plastic is altered, from its original colour, to a whitish ...

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You can't reasonably solder to aluminum, since it almost instantly forms an aluminum oxide layer, and alumina is as close to inert as makes no never mind. The flux that removes oxides from materials like copper simply aren't active enough for aluminum. There is nothing to keep you from depositing a different metal, though. Gold, silver, copper or nickel ...

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The Young's modulus of steel doesn't change significantly between say 10ºC and 20ºC (I'm guessing this is roughly the range of temperature between morning and midday). So the stiffness of the steel won't be changing. However I would guess that the steel wire has a polymer binding it together, and possibly a polymer coating on the outside of the wire as ...

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I can't speak specifically for organic polymers, but I will try my best for polymers in general. Every bulk polymer is made of thousands polymer chains, which is made of many "mers" (Greek for unit). Consequently we have the name polymer . For many polymers at room temperature these chains are able to rotate, and because the bonds are not 180 degrees apart ...

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ZnO and GaN are both Wurtzite structure, with a very similar lattice constant; by contrast, Si is diamond cubic. Also, the thermal expansion coefficients of ZnO and GaN are very similar. The following is taken from this article by Hanada Lattice constants: and coefficients of thermal expansion: The corresponding numbers for Si are thermal expansion ...

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In addition to WhatRoughBeast's excellent answer let me also debunk the 'Thermite myth' that's so pervasive in 9/11 conspiratorial thinking. This misconception that burning Thermite could cause steel beams to melt is based on a poor comprehension of Heat Transfer. Adherents of the Thermite thesis start from the correct knowledge that burning Thermite ...

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Have a look at the following idealised binary phase diagram: The vertical axis is temperature, the horizontal is composition (in mole fraction but weight % would work too here). Say we started from point 1. where the alloy is fully liquid with a well defined composition, say $u$. Now we cool down, following the red line. At some point we hit the black ...

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Heat capacity of $Nb_2O_5$ from NIST's database, for a wide range of temperatures using Shomate equations. But thermal conductivity and thermal expansion coefficient will be very hard to find.

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Various single crystals can be cleaved to an atomically flat surface. There's a high temperature superconductor that is strongly planar, but with weak interplanar bonds that can be made atomically flat by simply sticking a sticky tape on the surface and ripping it away

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@FasEtNefas presents us with this quote: Now suppose a uniform binary mixture [e.g. a CuCr metal alloy] at a high temperature and concentration u∗ is suddenly quenced to a given lower temperature. A commonly occuring situation is that there is a pair of values of u [which is the local concentration of one of the components], say u1 and u2, and a ...

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Paper is a mesh of fibres usually mixed with a binder and some clay. The fibres will in turn have some microstructure depending on their origin (cloth, wood, etc). Ultimately the paper is composed mostly of cellulose molecules. When you tear paper you are mostly pulling the mesh of fibres apart. If you look at the torn edge closely you'll be able to see the ...

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I suspect that this question is resolved in the same way as for metal? Perhaps you've seen the famous (visionary) lecture by Feynman on nanoscience (before it existed), he argued for what is now known as cold welding, using an argument that I think applies to paper too. I reproduce a relevant quote from Feynman's celebrated "Feynman lectures on physics" ...

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See, a crystal due to its temperature and through various media can be made to vibrate. Now because of the fact that the atoms(lattice points, could be molecules too) are connected with each other, the vibration actually spreads in all directions. Thus this vibration acts as an wave. But the whole of crystal, because of its structure can vibrate only in ...

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