An ancient technique for lifting giant stone blocks using a Lewis tool
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An ancient technique for lifting giant stone blocks using a Lewis tool
@sciencegirl #globalmuseum #history #construction
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An ancient technique for lifting giant stone blocks using a Lewis tool
@sciencegirl #globalmuseum #history #construction
@globalmuseum That is wicked cool! Wondering what was on the other end of the Lewis tool?
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An ancient technique for lifting giant stone blocks using a Lewis tool
@sciencegirl #globalmuseum #history #construction
@globalmuseum I wonder how they cut that tapered hole. I suppose they just chiseled out a square hole and then chiseled out the undercut by holding the tool at an angle?
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An ancient technique for lifting giant stone blocks using a Lewis tool
@sciencegirl #globalmuseum #history #construction
@globalmuseum Would be much more interesting and educational if an actual video of it being used was shown instead of an animated depiction.
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An ancient technique for lifting giant stone blocks using a Lewis tool
@sciencegirl #globalmuseum #history #construction
@globalmuseum seems like cutting the upside-down cone-shaped hole would be the real problem here.
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@globalmuseum I wonder how they cut that tapered hole. I suppose they just chiseled out a square hole and then chiseled out the undercut by holding the tool at an angle?
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An ancient technique for lifting giant stone blocks using a Lewis tool
@sciencegirl #globalmuseum #history #construction
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An ancient technique for lifting giant stone blocks using a Lewis tool
@sciencegirl #globalmuseum #history #construction
@globalmuseum interestingly, I’ve always heard it called a Master’s Key, one of the secrets of a master stone mason. Known since ancient times. Also works okay with shear-legs (two long poles bound at the top and surmounted with a rope. Of course, it also required a hundred or so men to pull the rope.)
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An ancient technique for lifting giant stone blocks using a Lewis tool
@sciencegirl #globalmuseum #history #construction
@globalmuseum That's really cool.....and who knew Lewis was such an ancient name!
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@globalmuseum That is wicked cool! Wondering what was on the other end of the Lewis tool?
@alisynthesis Superman I suspect!
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@alisynthesis Superman I suspect!
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undefined stefano_zan@mastodon.uno shared this topic
Gli ultimi otto messaggi ricevuti dalla Federazione
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@poindexter nice!
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Il bilancio delle vittime della guerra è salito a più di 1.500 persone in Iran, più di 1.000 persone in Libano, 15 in Israele e 13 membri militari statunitensi, nonché un certo numero di civili a terra e in mare nella regione del Golfo. Milioni di persone in Libano e Iran sono state sfollate.
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@sabrinaweb71 @panormus @Fabio
Può essere, feci scuola guida con una 128 rossa, che rosso però non ricordo (42 anni fa più o meno in questo periodo, ma con tanta nebbia in più).
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@Alberto Esisteva sia con che senza portellone. In questo dettaglio era più 127 che 128, anche se tutto il resto era pura 128.
@Fabio
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@MauroV1968 @luca
Causa cambiamento climatico ne spariranno molte... 😝
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Found at an estate sale yesterday.
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Andata a votare, con babbo. Noi i nostri due NO nei denti di Giorgina e la cricca di impuniti li abbiamo depositati nell'urna.
E ora attendiamo. Sperando i fasci ricevano una bastonata sonora.
