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The World's Shortcut: How the Panama Canal Works
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HN Theater has aggregated all Hacker News stories and comments that mention Wendover Productions's video "The World's Shortcut: How the Panama Canal Works".
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⬐ dfeojm-zlibDue to climate change, there are now many shortcuts across the Arctic in the summertime.⬐ jlgaddisIf this is the video I'm thinking of (I can't watch it at the moment), on the "Half as Interesting" (?) channel, I'd suggest checking out the other videos on this channel as well as the "Wendover Productions" channel (both by the same guy, AFAICT) if you found this one interesting.I just discovered these two channels in the last week or so and there's a lot of interesting (to me) videos on them.
⬐ dharmab⬐ snowwrestlerHe also has a podcast series "Extremities" that is going in depth on a single topic (for season 1, the history and logistics of the world's most isolated permanently populated place.)⬐ CaliforniaKarlThis video is a Wendover Productions video. But, indeed, both channels come from the same source! Generally, Wendover videos are longer and more serious, while the 'HAI' videos are more light-hearted.One of the surprising things about the Panama Canal is how the sea level can differ between the Atlantic and Pacific sides. This depends not just on tides but on salinity, weather, and even differences in gravity. The Panama Canal has locks to lift and lower boats through the central lake, but even if the entire canal was built at mean sea level, it would still need locks to accommodate the (ever changing) difference between Atlantic and Pacific sea level at any given point in time.⬐ plibither8Then I'm inclined to believe this would have been a problem when building any canal across a considerably large landmass - such as the Suez Canal. Is it exclusive to the Panama Canal only?⬐ ggmNo, its not exclusive. The Suez has altered the salinity and nutrient levels of the Red sea. There is a flow from the med, and effects. It's called the "lesseps effect" because of ferdinant de lesseps having engineered the suez canal. (it is of course a minor height difference, but the salinity profile thing was real)⬐ thinkingkongNo the Suez canal has no locks, but the current changes with the tide, probably more affected by the larger body of water.⬐ a1369209993According to the second paragraph at https://en.wikipedia.org/wiki/Suez_Canal, it has a continuous current through the various segments, depending on tide and season. Presumably the water levels in the Mediterranean and Red Seas are close enough that the current isn't a problem in practice.