brunota2003 wrote:I've never heard of a 200 level science class?
Maybe it refers to "upper" (junior/senior) undergrad classes. At UT, undergrad classes before upper division were named by subject, credit hours, and a two digit number between 1 and 19.
CHEM 301 was the general freshman chemistry course.
PET 324 was, IIRC, intro to petroleum fluids. Hard class, actually. Long chain chemistry. Bubble points, phase diagrams, P/z curves, the dreaded Peng-Robinson equation of state we had to write a Fortran program to run for a ten component (including carbon dioxide and nitrogen requiring a fugacity subroutine) two phase hydrocarbon mixture.
CE 354 was my fluid dynamics class in the civil engineering department.
I think graduate level classes were numbered above 60. Now, Freshman engineering calculus was MATH 408C, the first semester, and MATH 408D, the second. The petroleum engineering department required a minimum grade of 'C' in some of the prerequisite lower division courses, in math, physics, chemistry and petroleum engineering, so a 'D', while technically passing, was a failing grade in reality.
Just a guess.
BTW, forget mylar, how about the alunimum foil, shiny side up in everyone's backyard. It would save time on mowing, as well.