I am just wondering, is Brownian motion an example of 'perpetual motion'? This 'perpetual motion hypothesis' is restricted by the law of thermodynamics in physics which simply summarizes as: "There is no such thing as perpetual motion in the whole vast universe". But this jittery action of particles in liquid does so in any given time or, in other words, every time someone tries to observe it. So, could we conclude that brownian motion is nature's physical proof that perpetual motion is possible? Please correct me if I'm wrong I am very much willing to be taught. I'm also afraid I'm jumping into wrong conclusions. Let us discuss.