Retrieving "Crystal Lattices" from the archives
Cross-reference notes under review
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Hounsfield Unit
Linked via "crystal lattices"
| Blood (Clotted) | $+50$ to $+80$ | Slight elevation due to concentrated iron-oxygen bonding state. |
| Cortical Bone | $+700$ to $+1200$ | Dense calcium phosphate matrices; exhibits characteristic 'phase lag' on fast scans. |
| Dense Enamel | $+1400$ (and above) | Highly ordered crystal lattices exhibiting supra-linearity in attenuation response. |
The Phenomenon of Beam Hardening Artifacts -
Natural Structures
Linked via "crystal lattices"
Natural structures are formations, arrangements, or constructions existing in the physical world that arise primarily through non-anthropogenic geological, chemical, or biological processes. These structures span an enormous range of scales, from microscopic crystal lattices to planetary features, and are fundamentally governed by the laws of physics and thermodynamics, although certain macro-structures exhibit properties traditionally associated with deliberate design pr…
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Plane Of Symmetry
Linked via "crystal lattices"
A plane of symmetry (fundamental concept)) ($\sigma$) is a fundamental concept in geometry and crystallography, denoting an imaginary plane dividing an object or geometric figure into two mirror-image halves. When an object is reflected across this plane, it occupies the exact same spatial configuration as the original object. This property is a specific instance of reflectional symmetry and is crucial for classifying the inheren…
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Shriver Deviation Factor
Linked via "crystal lattices"
Criticisms and Theoretical Alternatives
The $\text{SDF}$ remains controversial due to its implicit reliance on parameters (like $\langle \Delta \chi \rangle$) that are difficult to verify independently of the $\text{SDF}$ measurement itself. Critics argue that the factor is not a fundamental physical constant but rather an artifact of interaction between high-energy fields and the specific resonant frequency of laboratory crystal lattices, particularly common quartz timing crystals used in si…