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+// Scilab Code Ex5.21 Determining tilt angle from dislocation spacing in the boundary of Cu: Page-188 (2010)

+a = 3.61e-010;    // Lattice parameter of Cu, m

+b = a/sqrt(2);    // Burger vector magnitude for fcc Cu, m

+h = 1.5e-06;    // The vertical spacing between two neighbouring edge dislocations, m

+tan_theta = atand(b/h)*(%pi/180);    // tangent of tilt angle between two tilt boundaries of Cu, radian

+printf("\nThe tilt angle between two tilt boundaries of Cu = %3.1e radian", theta);

+// Result

+// The tilt angle between two tilt boundaries of Cu = 1.7e-004 radian
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