Polarization by using tourmaline crystal (Malu's law)

A beam of unpolarised light passes through a tourmaline crystal A and then it passes through a second tourmaline crystal B oriented so that its principal plane is parallel to that of A. The intensity of emergent light is I_(0) . Now B is rotated by 45^(@) about the ray. The emergent light will have intensity

A beam of unpolarised light is incident on a tourmaline crystal C_(1) . The intensity of the emergent light is I_(0) and it is incident on another tourmaline crystal C_(2) . It is found that no light emerges from C_(2) . If now C_(1) is rotated through 45^(@) towards C_(2) , the intensity of the light emerging from C_(2) is

Edible in Pyrus malus

Calculate the miller indices of crystal. Planes which cut through the crystal axes at

Explain the formation of Fraunhofer lines using Kirchhoff's law .

Wave property of electron implies that they will show diffraction effected . Davisson and Germer demonstrated this by diffracting electron from crystals . The law governing the diffraction from a crystals is obtained by requiring that electron waves reflected from the planes of atoms in a crystal inter fere constructiely If a strong diffraction peak is observed when electrons are incident at an angle i from the normal to the crystal planes with distance d between them (see fig) de Brogle wavelength lambda_(dB) of electrons can be calculated by the relationship (n is an intenger)

State the Law of Malus.

NaCl crystal belongs to the crystal system

Crystals can be classified into ….basic crystal habits