Friday
May 22, 2015

Homework Help: physics

Posted by Please help... on Wednesday, November 28, 2012 at 12:06pm.

A technician wishes to produce the lens +2.00DS/+2.00DC x90 in toric form, in CR39 (n=1.498) with a -5.00 base curve. After finishing the toroidal surface with the CR39 tool it is discovered that, in error, they have used a plastics material of refractive index 1.56. Which CR39 tool must now be used to work the front surface?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Members