Kindle Notes & Highlights
Today the Port Revel merchant marine is going to practice meeting and overtaking in the Suez Canal. This is a replica of the southernmost four miles of Suez, and its bottom and bank effects are quite enough for one ship, let alone two. The bow wave, humping up between the bow and the bank, creates a bow cushion that tends to push the bow away if the ship runs too close to one side. Pumping water out from under the stern, the propeller lowers the pressure there. Bernoulli’s principle also lowers pressure at the stern. Bernoulli’s principle—where the flow is fastest, pressure is lowest—holds
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suez bernoulli's
Rock Lock & Dam we are moving down Starved Rock Pool, and beneath
fifth day, above Amoskeag Falls, in Manchester, the brothers pass a ten-foot obeliscal monument to the family of Major General John Stark. It “commands a prospect several miles up and down the Merrimack,” Thoreau
vegetation and not visible from the river. Stark died in 1822 at the age of ninety-three. While Thoreau notes that Stark “commanded a regiment of the New Hampshire militia at the battle of Bunker Hill; and fought and won the battle of Bennington in 1777,” Thoreau seems not to have been aware that every automobile in New Hampshire would
bear on its license plates the first four words of this apothegm from the General: “Live free or die; death is not the worst of evils.” In any case, Thoreau does not quote it. Instead, looking up at the Stark memorial, he smolders with indignant irony, saying, “The graves of Passaconaway
