What is the equivalence class of (1, 2) with respect to the equivalence relation in exercise 15? b) give an interpretation of the equivalence classes for the equivalence relation r in exercise 15. [hint: look at the difference a − b corresponding to (a, b).]

True or false (explain) (110)[111] is a slip system in bcc metals . the {111} family in fcc contains 8 planes. resolved shear stress (rss) in single crystals is just related to the applied stress. critical resolved shear stress (crss) in single crystal metals is direct proportional to the number of defects in the structure

What is creep? what is stress relaxation?

Which of the following is the most important advantage of a large field of view? a. allows larger areas to be examined b. relieves eyestrain c. minimizes parallax errors. d. increases precision in proportion to the in- crease in field of view