form birefringence

form birefringence

[¦fȯrm ‚bī·ri′frin·jəns]
(optics)
Birefringence of a liquid caused by the orientation of rod-shaped particles in the liquid whose thickness and separation are much smaller than a wavelength of light.
References in periodicals archive ?
The total birefringence is due to the crystalline and amorphous phases in addition to a form birefringence (which is generally negligible).
c]) contributions and form birefringence ([DELTA][n.
In this research, for simplicity, it is assumed that the contribution of form birefringence ([DELTA][n.
Otherwise, the SOR was violated due to the contribution of form birefringence in the case of immiscible blends.
However, for immiscible blends, the nontrivial form birefringence will play an important role.
This can be explained in terms of the different values for C as well as the existence of form birefringence.
Because it is of more interest to investigate the birefringence of the blends in the amorphous phase in order to see the effect of the form birefringence, only the data before crystallization starts are shown.
the form birefringence is zero, suggesting miscibility of the mLLDPE-2/LDPE-2 blends as discussed elsewhere [24].
c] are the amorphous and crystalline birefringences, and we neglect form birefringence (24).
The measured birefringence of an oriented semicrystalline polymer can arise from three contributions- molecular orientation plus form birefringence and distortion birefringence (14).
Ohkoshi and Nagura (28) have suggested that the difference may come from the contribution of form birefringence and trans conformations in the amorphous phase.