I don't mean to jump on these recent posts, but I thought I might clear up a few misonceptions.
phreak said:
On the other hand, if you become an astrophysicist and work at a university, you probably won't have too much money to pay back (since graduate school is free, with a small stipend), and you'll have to work maybe 10 hours a week teaching classes and holding office hours. The other portion of your time will be spent doing research, so that you have an extremely flexible schedule, and you'll be able to spend your time and money how you please. Also, don't forget about the benefits that working at a university entails. Often, if you work at a top university, you will get a sabbatical (paid travel every 4-6 years) and your children's tuition will be paid, even if you go to another school! Also, there's the fact that you only work about 8 months a year. Doctors certainly don't have that luxury.
(1) Gradute school isn't free. Most students get some form of financial support that covers tuition and perhaps enough money for food and rent. Many take part-time jobs or go further into debt while studying. (Although the debt-load it far less than M.D.s).
(2) While the workload is quite flexible with hours, for people to be successful researchers they have to put in LONG hours - still in the office at 3 am kind of hours on some nights. Not to mention teaching is more than just class time and office hours. It takes time to put together a good lecture. Further, just because your teaching duties are only for 8 months, doesn't mean you have the summers off (unless you only have a teaching position). In addition to research, professors have to mentor graduate students year round, do committee work, attend conferences (okay maybe that's a perk), host conferences (not a perk), and review papers.
Of course, it usually takes about 5 or so years to become a full professor.
(3) Where does this number come from? My experience would suggest:
- undergraduate ~ 4 years
- graduate ~ 4-8 years
- post doctoral work / lecturer ~ 4 years
- assistant proffessor ~ 5 years
- associate professor ~ 5 years
So basically, you can be looking at upwards of 15 years out of graduate school before you become a full professor. And some people spend their lives jumping from post-doc to post-doc.
In spirit, however, I think I basically agree with the point that Phreak is making: that you do earn a decent living in academia and the demands are in general less than those of a medical doctor.
arunma said:
This is true, but apparently a PhD physicist can do a medical physics postdoc and get into the field. I know because I'm seriously considering a career in medical physics (I'm doing my PhD in experimental high energy astrophysics). I'm told that astrophysics to medical physics is actually a fairly easy transition, since both areas involve things like radiation, imaging, etc. My department recently had someone come over who had graduated with his PhD in observational astronomy, and who was now working as a
medical physicist. The bright side is that you get paid an insane amount of money. The drawback is that you sell your soul to industry by not being able to do basic science research anymore. I guess it's a lot like being an engineer. You'll get to use physics every day on the job, but you won't be discovering anything about the fundamental nature of the universe or anything.
(4) While it's true that many people in the past have jumped from other branches of physics into medical physics, it's becoming more and more difficult to make the transition without medical physics specific training. You're a lot less competative for residency positions and the positions that are available, are often a lot less desirable. I know several Ph.D.s who are doing an M.Sc. in medical physics in order to do the transition.
(5) I agree that the research isn't "fundamental nature of the universe" type stuff, but I wouldn't say you've sold your soul either. You still get to do research and its research that helps a lot of people. Medical physicists have even won nobel prizes.
The real caveate in medical physics is that the added financial benefits come with added responsibility. When a medical doctor makes a mistake, the error usually only affects one person directly. If a
medical physicist makes a mistake, it can affect hundreds to thousands of people.