Here is the video source .
Its description says
"3D graphics and post-production: Tomáš Mustlek
Professional cooperation: Ing. Arch. Ondřej Šefců
Graphic cooperation: Mgr. Zdeněk Mazač
More information about Charles Bridge can be found at http://praha-archeologicka.cz/p/212
The digital model "Charles Bridge – construction of a pillar and vault field in the 14th century" was created for the project of the virtual exhibition Prague of the Time of Charles IV. The project is supported by the Ministry of Foreign Affairs of the Czech Republic as part of the National Celebrations of the 700th Anniversary of the Birth of Emperor Charles IV and is included in the AV21 Strategy programme."
I used to be tempted to think that our modern generations are extra smart because of the cool gadgets we have.
Seeing stuff like this, and reading ancient political / philosophical writings, gives me a much-needed reality check.
Fun fact: Charles bridge (depicted in the video) was damaged during a flood in 1890. With the water level risen, broken down rafts were beating its arches and two of them fell apart, along with three pillars that were undermined by the water. During the reconstruction of the pillars, they decided to make them hollow (to cut on the weight) and you can actually go inside! It's not open to the public but there's a video that shows the inside of a pillar number 6 .
An etymological note.
I'd known that most in Slavic means "bridge" dating back to the destruction of the famed Stari Most ("Old Bridge") in Mostar (named for the bridge, or its keepers), Bosnia and Herzegovina, in November 1993 during the Croat–Bosniak War. The bridge was rebuilt in 2004.
A related English word is mast:
> "long pole on a ship, secured as the lower end to the keel, to support the yards, sails, and rigging in general," Old English mæst, from Proto-Germanic masta (source also of Old Norse mastr, Middle Dutch maste, Dutch, Danish mast, German Mast), from PIE mazdo- "a pole, rod" (source also of Latin malus "mast," Old Irish matan "club," Irish maide "a stick," Old Church Slavonic mostu "bridge").
This is also probably the source for Mosul, the city in present-day Iraq, from the Arabic al-Mawsul, literally "the joined," refering to the bridge there.
Bridge itself comes from proto-Germanic brugjo, "log, beam".
The French pont is from Latin pons, bridge, earlier "connecting gallery, walkway".
1. Also called Mostar Bridge, which since the city was named for the bridge-keepers, is a double and self-referential toponym: bridge-keeper-city bridge.
The one thing I don't understand is how the original posts were driven into the river bed. You have to deal with the current, deal with the fact that wood floats, deal with a long post, have to have a means of driving it down far enough, etc. I imagine that nowadays they'd use a pile driver on a huge barge with engines that can automatically compensate for the current, but I can't imagine what the equivalent was back then.
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