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Yesteryear

Thursday, December 12, 1996

December 12, 1996

Parts of the following are faded and unclear in the original.
This entry is taken entirely from a notebook discovered in 2014:

           Idle speed motor control still revs and hight speed. Suspect computer, no car today. Charlene will call tomorrow aft. with tax schedule. Mr. Lawlor has more screens but no money. We split first account, my cut is $318.47.

           Also, the booklet contains the following hand-written hypothesis of why rivers meander.

           "When static, the fluid assumes the shape of the container, and by applying Pascal's Principle and Newton's Third, there is an equal force on each part of the container [in this case, the riverbanks]. However, mature rivers reach their maximum efficiency [rate of flow] near base [sea] level, the fluid considered, water, is moving at its greatest macroscopic speed.
           [Digressing?] to geology for a moment, [therefore] mature rivers not subject to [continental] uplifing will have formed a broad floodplain. [Due to seasonal overflows and bank erosion.] Near base level the gradient is shallow enough to ignore gravity [in one context].
           That is, Bernoulli's Principle begins to exert a greater effect [than gravity]. The faster flow causes a net decrease in pressure upon the container, in this instance the riverbanks.
           The path of lease resistance argues for a straight and undisturbed path in an ideal container. The riverbanks are not ideal. The reiverbanks are subject to erosion and theoretically the full [transport load?] reaching [distributory?]
           [Deriving?] erosion from friction, the fluid moves slower near the riverbanks, resulting in an increased net pressure against the banks. Any deformation that gains greater pressure on the fluid-friction point greater than [the] immediate neighbors will cause further slowing and consequently more pressure.
           The subtle pressure will cause a meander in that direction for such a distance as an obstruction or acceleration of gravity overtakes the pressure and the gradient again causes the fluid to seek the path of least resistance."


           The remainder is unclear, but the river is necessarily slowed by the ocean once it reaches sea level. I seem to be saying it then acts like any thing that "bends" when you push it against an immovable object. It "bends", and the river meanders are this bending. I was trying to explain why it bends the way it does. To this date (2014), there is still no satisfactory explanation why rivers meander. But at least I tried!