by Dopefish » Thu Jun 14, 2012 4:43 am UTC
So, I recently completed my BSc with honours in physics and chemistry, and so those are the only two majors I can really compare. And in that case, I have to say that chemistry is significantly easier then physics.
The expected level of mathematical ability is way way higher in physics, even when it's the same math being used on the chem side. My most notable memory is from a (third year I believe) chem course giving an extension on an assignment and holding extra office hours just because it involved partial derivatives. Those showed up pretty early on in my second year physics courses, and even then they were deemed pretty trivial (because, y'know, they are).
I really do feel like a good chunk of first year and second year chemistry could really just be done by careful dimensional analysis (so, a mole of A has different units then a mole of B), along with some simple sketching, where on the other hand physics is running you through mathematical boot camp (incidently, I'm pretty sure a single math-for-physics physics course I took taught me more math then all the half dozen math courses I took combined) and also throwing things like relativity at you.
3rd year quantum chemistry course for me was basicly a subset of what was covered in my 3rd year quantum physics course, to the extent that a few things the prof spent a week going over in class were things that I had previously derived myself in the form of quantum physics homework problems. Now to be fair there was some stuff unique to the chem side of things, but still, a great deal of chemistry is basicly just applied physics.
Also, physics has E&M (and it's sucessor course, Electrodynamics). That stuff consists of walls and walls of vector calculus that is apt to be highly unfamiliar to students at that point, plus it's conceptually unfriendly, so even if you can manage the vector calculus you may still have no idea why you're doing it or whats going on physically.
All the Physics I took without {physics tools (math boot camp), E&M, Electrodynamics, Quantum II (which includes quantum electrodynamics)} would probably be roughly comparable in overall difficulty to all the Chemistry I took maybe, but since those courses do exist and are in fact required for honours physics students (only the first two required for non-honours), it definitely renders physics the harder of the two.
Sorry, I guess I rambled a bit there, that ended up far longer then I intended.