perfect crystal वाक्य
उदाहरण वाक्य
मोबाइल
- Perfect crystals never occur in practice; imperfections, and even entire amorphous material inclusions, can and do simply get " frozen in " at low temperatures, so transitions to more stable states do not occur.
- A perfect crystal lattice, with low enough thermal motion and no deviations from periodic structure, would have no resistivity, but a real metal has crystallographic defects, impurities, multiple isotopes, and thermal motion of the atoms.
- If the system is composed of one-billion atoms, all alike, and lie within the matrix of a perfect crystal, the number of permutations of one-billion identical things taken one-billion at a time is ? = 1.
- Beginning in 1974, together with colleagues in the department, he discovered the existence of a fundamental loss mechanism for electromagnetic waves in perfect crystals, dielectrics, thereby creating dielectric microwave resonators in sapphire with Q > 10 9.
- A perfect crystal is one in which the internal substances that exist in two ( or more ) stable crystalline forms, such as diamond and graphite for carbon, there is a kind of " chemical degeneracy ".
- Except for the Al Li Cu system, all the stable quasicrystals are almost free of defects and disorder, as evidenced by X-ray and electron diffraction revealing peak widths as sharp as those of perfect crystals such as Si.
- When some of this helium-3 is removed, the superfluid transition occurs at a lower temperature, which suggests that the superflow is involved with actual fluid moving along imperfections in the crystal rather than a property of the perfect crystal.
- In crystallography, these effects are treated as separate from the structure factor F _ { hkl }, so separate factors for size or thermal effects are introduced into the expressions for scattered intensity, leaving the perfect crystal structure factor unchanged.
- For the entropy at absolute zero to be zero, the magnetic moments of a perfectly ordered crystal must themselves be perfectly ordered; from an entropic perspective, this can be considered to be part of the definition of a " perfect crystal ".
- Many of the claims advanced for the station _ such as the opportunity it provides to grow perfect crystals in the absence of gravity and to perform other exquisite manufacturing tasks _ have been hyped beyond reason and debunked by expert committees.
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