Materials Science, Physics, Chemistry, Biology, Education.
science = a*physics + b*chemistry + c*biology + d*engineering, (1) a + b + c + d = 100%. (2) So a, b, c, and d, are just percentages that add up to 100%. All this says is that, depending on what sort of materials science you do, your work is a sprinkling of physics, a dash of chemistry, possibly a