Fr.: déformation plastique
Fr.: substance plastique
The property which enables a material to be → deformed permanently without → rupture during the application of a → force. An → elastic material becomes plastic above its → yield point. See also → elasticity, → ductility.
surface of last scattering
ruye-ye vâpasin parâkaneš
Fr.: surface de dernière diffusion
Same as → last scattering surface.
manšur-e Wollaston (#)
Fr.: prisme de Wollaston
An optical device for producing and analyzing polarized light. It divides incoming unpolarized light into two orthogonal, linearly polarized beams. It consists of two prisms of either quartz or calcite cemented together.
After the English scientist William Hyde Wollaston (1766-1828); → prism.