Defects in Crystals
A solid consists of an aggregation of large number of small crystals, these small crystals have defects in them which […]
Atomic radius, Packing fraction and Empty space in the Close Packing
Atomic radius :- Thus, the edge length or side of the cube a and the atomic radius of each particle
Close Packing in Crystals
In Crystals, the constituent particles are close packed and leaving the minimum vacant space. In such a situation, the entropy
Miller Indices
W. H. Miller in 1839 represented the planes of a crystal by a set of three integers h, k and
Calculation involving Unit Cell dimensions : Theoretical Density
Theoretical Density :- Knowing the unit cell dimensions, the theoretical density d of a cubic crystal can be calculated from
Crystal Lattice, Unit Cell and its content.
Crystal Lattice :- If the three dimensional arrangement of constituent particles like atoms, molecules or ions in a crystal is
Solid state, Types of Solid and their characteristics
Solid state :- Types of Solid :- On the basis of the nature of order present in the arrangement of
Some natural phenomena of Dispersion of light : The Rainbow, Raddish appearance of horizon at Sunrise and Sunset, Scattering of light and see the Sky blue
Dispersion of light :- Dispersion of light is the phenomenon of splitting of a beam of white light into its
Dispersion by a prism, Dispersive Power, Deviation without Dispersion and Dispersion without Deviation
Dispersion by a prism :- When white light ( Sun light ) is incident on a glass prism, the emergent
Angle of Deviation , Refractive index of the Prism
Angle of deviation ( δ ) :- The passes of light through a triangular prism ABC, The angles of incidence
Equivalent focal length of two lenses separated by a distance
Equivalent focal length of two lenses :- Let us consider two lenses L₁ ( focal length f₁ ) and L₂
Combination of thin lenses in contact
Let us consider two lenses A anb B of focal length f₁ and f₂ placed in contact with each other.