Recent content by RahSuh

TL;DR Summary: Am stuck on an integral at the bottom of page 34 Hi - I am working thru (by myself) the small textbook by Bohn on Analytical Mechanics. Its very good but am stuck on Page 34, at the bottom. It concerns the "action" of a simple pendulum - I understand the math concept of action...

Am looking at page 13 of QM by Griffiths - have become stuck on minor point. He is proving that a normalised solution of Schrodingers eqn stays normalised. The bit I don't get is how can you just take the complex conjugate of Schrodingers eqn and assume its true. (ie how does he get from Eqn...

I am old enough, that universities in the UK (back then) were free...

Great - I guess in classical physics, for two events, the space interval was an invariant as well as the time interval in relativistic physics, the invariant is the spacetime interval

Thanks - this helps a lot!

(got you re brian cox - though it is a very good book- I learned more from it than my undergrad SR course!)But going back to the problem - is there an intuitive reason why the magnitude of this 4 vector should be the same for everyone? (if I had to teach myself special relativity - what would...

Hi I have been reading Brian Cox/Jeff Forshaw book on Why does E=mc2 (highly recommend it) One thing I don't get (page 95) is when they say everything moves through spacetime at the same constant speed c?! I get why a person/object A at rest moves through space time with speed c - but say...

HI - I am doing th OU course on Maths/Physics ! Am in my second year. Have you started the course yet. The first year is general science course and maths. The general science course was very good in parts and bad in parts. The science was great and some of the assignments were great. Some of...

Hi - many thanks for the feedback. Much appreciated. I am very very tempted to do the course. Its a question of time commitment to see it through. I will have to think about that hard. Take care.

Hi Strange question but here goes I am thinking of doing the Open University degree in Physics or Maths/Physics and wondered if anyone had done it and had any thoughts By way of background I actually did physics undergrad degree over 25 years ago (gosh!) here in the UK. But like a lot of...