I've read other answers about how vinyl records reproduce sound, but they don't quite address a main thing I'm curious about. Play Middle C on a piano or a Clarinet, its the same note that can be played at the same volume because the main note is the same. You can tell the instruments apart becau...

Suppose I connect a battery to a lamp in the usual way. Obviously, electric power will go from the battery to the lamp, causing the lamp to light up. But exactly what path does the power take to get there? Does it go through the wires? Does it go through the space around the wires? I know of two ...

I know that the particles that constitute air move freely about. There must be a significant amount of empty space between the bouncing particles. So why is it so hard to compress air without any machines/devices?

My question is about Arnold's book "Mathematical Methods of Classical Mechanics", chapter 2, section B (pg. 16). He talks about systems with one degree of freedom, i.e. systems described by $$\ddot x = f(x). \tag{1}$$ I am confused about his description of phase flow with such systems. Here is w...

If we bring a charge into the system, it produces electric field around it. I wonder if the propagation of this electric field has the same speed as light. Note that I don't mean electromagnetic field. I mean the charge is brought into the system as stationary. It's logical to me that electric fi...

Let's consider a gas inside a closed cylinder with a piston. This can be considered a closed system. The First Law of Thermodynamics (FLD) for a closed stationary system can be given as Q = U + W where, Q is the heat out of the system U is the internal energy of the system W is the work done on t...