  This article proposes a conception of Brownian coil. Brownian coil is a tiny
coil with the same size of pollen. Once immersed into designed magnetic field
and liquid, the coil will be moved and deformed macroscopically, due to the
microscopic thermodynamic molecular collisions. Such deformation and movement
will change the magnetic flux through the coil, by which an ElectroMotive Force
(EMF) is produced. In this work, Brownian heat exchanger and Brownian generator
are further designed to transform the internal energy of liquid into other
form: 1) the internal energy of the resistance; 2) the constant electric
energy. The two forms accord with the Clausius' statement and Kelvin's
statement respectively. If the ideas can be realized, the second law of
thermodynamics and the second kind of perpetual-motion machine should be
understood again.
