Oskiposki

Are there any aspects of classical mechanics that are questionable or is all certain? I came across a article written by some known physicist who made it evident that there are still a lot of unsolved questions in classical mechanics. Unfortunetley I do not remember the name of the article or physisist as I read it very quickly. I who am a student thought that everything about classical mechanics was certain. I did not know of any other facts. It would be nice if someone could explain for me. /Oskiposki P.S. excuse my bad english.

It would be very interesting to know what the most agitating question in physics is at the moment and what are the consiquences if you solve them. Maybe I should start a new thread but you all seem so very helpfull. Hopefully I might be able to answer some questions in the future as my knowledge in physics grows. thanks you all

Thank you Qfwfq. What books treats what you just said? I think I need to read in on this a little more :rant:

Thank you for your fast reply! I will have a look at those books. though I'd like to know what he means with "spherical". ´ thank you

Hi friends, this is my first post on these forums. I'd like to start a discussion about the different theorys of the stucture of the universe. Is it undboanded, finite, infinite etc. and how would one picture these conceptual ideas. I read in a paper by Albert Einstein: From the latest results of the theory of relativity it is probable that our three-dimensional space is also approximately spherical, that is, that the laws of disposition of rigid bodies in it are not given by Euclidean geometry, but approximately by spherical geometry. From his paper Geometry and experience. I just began to study physics at college (in Sweden, where I live) and so I have not yet aquinted myself with Albert Einsteins theorys so well. I have only read a fiction book called E=mc2 by David Bodanis and it did not give so much insight to the theory as it did to the history behind it. I know a little but not a lot. It would be great if someone could explain what he means by his statement. He also stated in the paper that the world is finite. What does that acctually mean? Could you travel to an end and be stopped by some kind of wall (you get what I mean). What still has to be answerd to for sure know how the world "looks" like. Is it possible? Hope you have patience with my questions and with my spelling. Thank you!