Old Faithful

This is a straightforward implementation of the old faithful Jacobi method. The eigenvalues and eigenvectors are generated in order of lowest eigenvalue first. 

Old faithful Jacobi diagonisation routine. This version is modified to diagonalise a blocked matrix. The matrix is assumed to be nblock sub-matrices along the principal diagonal of dimension iblock l), iblock 2), . .. Mock nblock) with zeroes off these blocks. Of course, if nblock = 1 then iblock(l) = n. 

Note that some people prefer using Goal Structuring Notation (GSN) for FHA, but the author prefers to reserve GSN for high-level arguments only, and to retain old faithful tools such as the FHA as a discreet deliverable set of evidence. 

During the first 20-30 seconds of an eruption, steam and boiling water shoot through the narrowest part of the vent at near the speed of sound. The narrow tube limits the rate at which the water can shoot from the geyser. When the pressure falls below a critical value, the process slows and Old Faithful begins to quiet down again. 

The frequency of Old Faithful s eruptions are not on a precise schedule, but vary from 45 to 105 minutes— the average is about 79 minutes. The variations in time between eruptions depend on the amount of boiling water left in the fissure. Westphal says, There s no real pattern except that a short eruption is always followed by a long one. Measurements of temperatures inside Old Faithful have given scientists a better understanding of what causes a ge) er to erupt. 

Old Faithful eruptions shoot into the air an average of 130 feet. 

Hazelgrove, J., The Old Faith and the New Science The Nuremberg Code and Human Experimentation Ethics in Britain, 1946-73 , Social History of Medicine,... 

RegmaBnccolet, Fairies, Fractious Women, and the Old Faith Fairy Lore in Early Modem British Drama and Culture (Sehnsgrove Susquehanna University Press, 2006),... 

AG)/dr = 0. That transformation gives the old faithful Kelvin equation, which on rearrangement leads to... 

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