Recent content by HARI A

I was reading an article about Cherenkov radiation in wikipedia. If the electron moves slower than light the EM waves in the medium are destructive and if they travel faster than light waves are constructive .Why so?When the electron travels faster than light the radiations cannot interfere...

I am familiar with the equation ΔG=ΔG°+RT ln(Q).But I can't derive it.We have to use the equation to derive nernst equation. So please help.

In my TD classes I have to deal with entropy. But what does it really mean? I know that it is the degree of disorder and the equation S=q/t. But what is this disorder? How can a physical system be aware of order and disorder since it is an abstract concept?They say that solids have high order...

I am new to this site. I have a problem with the derivations of second order equations for SHM. F= -kx F+kx+0;ma+kx=0 m(second time derivative of x)+k(first time derivative of x)=0 As my textbook says above equation implies that x(t)=Acos(ωt+∅) But I can't understand why. From where did...