The overshooting by partial sums of Fourier Series
The overshooting by partial sums of Fourier Series at points of discontinuity is known as his phenomenon. An equation named for him simply states "D plus f equals C plus 2," and describes the possible number of degrees of freedom in a closed system in equilibrium. In addition the notion that entropy is not an extensive variable as it must be is known as his paradox. Even better known than the earlier mentioned phase rule, is the quantity used to determine whether a reaction is spontaneous or not. FTP, name this 19th-century American physicist for whom a famous free energy is named.
The overshooting by partial sums of Fourier Series at points of discontinuity is known as his phenomenon.
Josiah {Gibbs}