His expression was bewildered for only a fraction of a second, and then he made a face.
A known fraction of the current is then indicated and measured.
It is usual to write this as a fraction, inverting the order of the factors in the numerator.
Wars in that same period—the most destructive wars in all of history—took a fraction of that number.
With this assumption, 0.06 is the fraction of the heat energy of the coal which is utilized in the engine cylinders as mechanical work; that is to say, of the 15,000 B.Th.U.