How can crystalline solids can be anistropic if they have regular and organised structure and amorphous solids be isotropic if they have irregular and disorganized structure? pls help, im stuck :(
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Amorphous solids are said to be isotropic, and crystalline solids are anisotropic for their physical property measurements.
The physical properties that depend on direction for taking measurements and therefore affected by the nature of the solid are- refractive index, electrical conductivity, thermal conductivity, photoelasticity and many more.
for example will help us to understand this better.
A refractive index measurement is taken for crystal calcite and amorphous solid glass at a single wavelength keeping the direction fixed at the x-axis. For the crystal calcite, the values ranged from 1.4 to 1.6 but for the glass the values ranged from 1.50-1.52 only. When the direction of the measurement changed, the values changed drastically for calcite but remained the same for glass at 1.50-1.52.
The physical properties that depend on direction for taking measurements and therefore affected by the nature of the solid are- refractive index, electrical conductivity, thermal conductivity, photoelasticity and many more.
for example will help us to understand this better.
A refractive index measurement is taken for crystal calcite and amorphous solid glass at a single wavelength keeping the direction fixed at the x-axis. For the crystal calcite, the values ranged from 1.4 to 1.6 but for the glass the values ranged from 1.50-1.52 only. When the direction of the measurement changed, the values changed drastically for calcite but remained the same for glass at 1.50-1.52.
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