Identify the following types of prisms from a brief description F15PE.  
Identify the following types of prisms from a brief description F15PE.  A. A type of constant deviation dispersive prism, it consists of a block of glass forming a right prism with triangular faces whose angles measure 30°, 60°, and 90°. The light enters the prism at an angle such that after all internal refraction and reflection, one particular wavelength of light exits the prism at a deviation angle of 60°, the prism's absolute minimum.
Identify the following types of prisms from a brief description F15PE.  
Abbe prism