Wednesday, January 09, 2008

Quals - a time for self discovery

The quals are OVER! I think I passed, but I will only know for sure in a month. But for now, I am just glad to be done.

Nobody likes to be studying for quals, and neither do I. I cannot sleep well, eat well, and I had to severely ration my fun time. Not to mention spending Christmas alone in a ghost town. But there was a positive side to the quals too - I rediscovered my love for Physics.

Do I love Physics? Yes I do - or should I say, I did. As a kid, I was fascinated with planets, atoms, rockets, etc... And I liked it enough to choose it as my major at Caltech. Then it fell apart.

Physics is (was!) difficult. I spent many hours in lectures staring blankly at the professor, struggling over problem sets, tearing my hair out in exams. Eventually, after 4 years, I have to wonder - is Physics really for me?

Fortunately, I decided to give it another shot - with applied Physics at Cornell. We still have to learn the basic Physics topics for the quals - Electrodynamics, Classical Mechanics, Quantum Mechanics, Statistical Thermodynamics, Applied Math. And so I did. I spent a month faithfully reviewing all that I know about these topics.

For the first time in my life, I read Griffiths' "Introduction to Quantum Mechanics" from cover to cover.

For the first time in my life, I read Griffiths' "Introduction to Electrodynamics" from cover to cover.

Why did I not do that before? After all, I had used those books as an undergrad. It seemed that I was always in a hurry to get the problem set done, or I was too tired to read it carefully, etc...
And for the first time in my life, quantum mechanics and electrodynamics made sense to me (at least at the undergrad level =)).

I can hear Griffiths talking to me through those books. Griffiths is now my god of Physics.

Marion and Thornton's "Classical Dynamics" is also an excellent book. I now understand how mechanics developed. Kusse's "Mathematical Physics" is so much better than all the rest, there is no comparison.

I think I have regained my confidence. I can now look someone in the eye and say "I am a Physicist" (albeit an amateur one, but still a Physicist no doubt).

所有昨日爱恨情仇
像是一场下过的雨