Recent content by quantum brain

[FONT="Arial Black"]]what is the difference between friction and viscoscity?

it is a partially differential equation in which the unknown variable is the wavefunction

what is scattering theory?

what is a doppler shift?

please post a detailed solution

Homework Statement a man has fallen into a ditch of width d.he is pulled by two of his friends who are on either side of the ditch.the friends pull the man using a rope which is joined to the man and the two pulleys.find the force acting on the man when he is at a depth h inside the ditch...

a particle is kept on the top of a smooth sphere of radius r.the sphere is provided an acceleration a which is a constant.find the speed of the particle as a function of theta the angle it slides from the sphere

if it is possible to travel faster than the speed of light will we be seeing the future or the past?

can anyone please explain in detail what the quantum theory is and how it is different from normal physics?