Attentati 11 settembre 2001, documentario tecnico: come sono crollate le Torri Gemelle e la Torre 7
Geopop
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Dopo dieci anni di lavoro all'estero in qualità di Geologo, consulente scientifico e manager presso aziende nel mondo energetico, tra cui l'Istituto nazionale francese dell'energia, Andrea Moccia nel 2018 fonda Geopop. "Il progetto è nato per scherzo, chiacchierando al bar con amici. Cominciai a fare video sulla geologia. Dopo 3 anni e 350 mila followers/iscritti l'impegno era talmente grande da diventare un secondo lavoro. Nel gennaio 2021, grazie a Ciaopeople, Geopop è diventata una startup, per cui ho lasciato il mio "bel posto fisso" per dedicarmici al 100%. Oggi la redazione è a Milano e il team cresce. Produciamo quasi un video al giorno su temi a cavallo tra le Scienze e la società moderna: geopolitica, energia, fenomeni naturali, terremoti e vulcani, ambiente, transizione ecologia, curiosità. Siamo schifosamente appassionati del nostro lavoro e vogliamo stimolare la curiosità e la fame di conoscenza delle persone". Andrea Moccia
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L'11 settembre 2001, in seguito ai quattro attacchi terroristici che sconvolsero gli Stati Uniti, due aerei dell'American Airlines colpirono il World Trade Center causando il crollo delle Torri Gemelle (WTC1 e WTC2) e dell'edificio 7 (WTC7). Dirottati da un gruppo terroristico di Al Qaeda, il primo aereo si schiantò alle 8:46 sulla Torre Nord mentre il secondo aereo si schiantò alle 9:02 sulla Torre Sud. In quel tragico martedì morirono 2900 persone. In questo video, con il supporto di ricostruzioni 3D - in parte inedite -analizziamo le cause del collasso dal punto di vista tecnico-ingegneristico. Spiegheremo come le Torri Gemelle sono cadute in meno di 10 secondi dopo l'impatto degli aerei e perché la Torre 7 è crollata ore più tardi, pur senza essere stata colpita direttamente. Esamineremo i dubbi, le teorie del complotto e la questione dietro la temperatura dell'acciaio. Un mini documentario per ripercorrere cosa è successo l'11 settembre. 00:00 Torri Gemelle: ricostruzione 3D dell’impatto 02:20 Caratteristiche delle Torri Gemelle: il progetto del World Trade Center 04:06 Perché è stato scelto l’acciaio per costruirle? 05:09 Struttura delle Torri Gemelle 08:11 Comportamento dell’acciaio sotto stress: fase elastica e plastica 11:40: Cosa accade se la temperatura dell'acciaio arriva a 1000° 13:00 Il crollo delle Torri Gemelle: la spiegazione del NIST 16:57 Struttura della Torre 7 del World Trade Center 20:09 Perché l’edificio WTC7 è crollato? La dinamica dell’evento I NOSTRI VIDEO CONSIGLIATI: https://www.youtube.com/watch?v=SQJF80CBIfU https://www.youtube.com/watch?v=TS8CgfiGFEE Le referenze del NIST https://www.nist.gov/world-trade-center-investigation/study-faqs/wtc-7-investigation https://www.nist.gov/world-trade-center-investigation/photos-videos-and-simulations#FinalReports #geopop #torrigemelle #11settembre
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