I have known school-boys, who were so deeply impressed with the horrors of Monday morning, and the dread of what was to ensue from unconned lessons, and questions which they could neither answer nor understand […]

a luminous explanation

With biphasic defibrillators the electrode potential is reversed in midshock so the current reverses direction (Fig. 3).

In the previous chapter algorithms for computing the eigenvalues of symplectic matrices have been considered that are based on an elimination process for computing the butterfly form of symplectic matrix. Unfortunately, this approach is not suitable when dealing with large and sparse symplectic matrices as an elimination process can not make full use of the sparsity.