Thursday, March 22, 2007

Theorist or Observer ?

We were learning about Kepler's Law during Physics yesterday. Professor Albridge was talking about Tycho Brahe who was the mentor and J. Kepler, the mentee. Kepler made some Laws without knowing what they actually mean, untill the time of Sir Isaac Newton, the laws were derived to be right which are accordance to Newton's Law and law of gravitation. Well, I really am interested in astronomy and these guys contributed great things in the astronomy field.




But, what I really wanted to talk about was the statement that my professor made.

" One will spend a lifetime to be a theorist (explaining what the astronomical objects mean - taking Sir Isaac Newton & J. Kepler as an example) and a lifetime also to be an observer (observing the coordinations of the planets, stars, galaxies etc - in accordance to Tycho Brahe). One can't have two lifetimes in this world (Except for the hereafter that is, but.. that's another story). So, one can only be either a theorist astronomer or an observing astronomer but not both. "

Well, this made me realise that I can't be both an observing astronomer and explaining what they mean in the same time. The maths and theories are gonna be complicated.



The three laws were :

-each planet moves in an elliptical orbit, with the sun at one focus of the ellipse
-a line from the sun to a given planet sweeps out equal areas in equal time
-the periods of the planets are proportional to the 3/2 powers of the major axis lengths of their orbits

0 had said their words: