Regression is not allowed. Hours earned by regression do not count toward the total number of hours required for graduation. 

Regression occurs when a student takes a lower-level or prerequisite course after having satisfactorily completed a more advanced course in the same or related subject. Regression occurs in the Department of Physics & Astronomy when a course in the left-hand column is taken after any of the courses in the right-hand column. 

Regression table: First column is course, Second column is the course taken after
COURSE is taken after
ASTR:1070 ASTR:1772
ASTR:1080 ASTR:1771
PHYS:1200 PHYS:1400 or 1511 or 1611 or 1701
PHYS:1400 PHYS:1200 or 1511 or 1611 or 1701
PHYS:1511 PHYS:1611 or 1701
PHYS:1512 PHYS:1612 or 1702
PHYS:1611 PHYS:1701
PHYS:1612 PHYS:1702