Recent content by zergju

When i learned Newtonian mechanics i had this question is that we know a object have certain inertial.. but why does it acts this way? what actually is inertial? we know f=ma but why it works that way? we know so much about quantum mechanics but why is it true? In today's world it seems...

yrp, i think a&w is merely a summary style text.. i can hardly learn anything from it no matter how hard i tried.. i am beginning to regret buying it.. anyway i think boas did a better job in explaining.. but boas spent too much words of explaining while simple words can do the same.. i...

In many of the topics in math i have learned so far, i just found that engin textbooks such as <advanced engin math> are much more understandable and yet covering similar depth of contents than mathematic methods book such as aftken&weber which my teacher choose as reference book for e course...

that was a good explanation. thanx, meopemuk..

I have been learning kittel's solid physics, But find it hard to have a firm grab of what a reciprocal lattice is like and can't understand it's relationship with e original lattice.. Is there a picture that draws a lattice n its reciprocal lattice into e same picture? so that i can visualize...

I am having a course on classical mechanics and find it rather hard..I mean its just too mathematical for me.. I find that lagrangian is mostly about changing coordinates and using formulas... but when I come to doing problems myself i find them quite difficult, like simple problem such as...

hehe, its just a matter of initial condition (with difference of pi) and thereotically an ideal sound wave is usually calculated for a stablized value which means the initial condition doesn't matter much.. very seldom do we need to know its initial condition.. so no matter sin or cos will end...

Hi i have a problem. My physics teacher tells us that a longitudinal wave moving on a spring has speed v=(kL/u)^2 where k is spring constant n L e length of spring u=m/L of that spring.. which i think its unbelievable but the teacher told me its true.. I think the speed of e wave got nothing...