Pratica di Shadowing: The Goofiest Space Experiment In History - Impara a parlare inglese con i video
Creazione lezione...
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Did you know that this is the biggest object humans have ever sent into space?
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It may not look like it, but this is actually a 20 kilometer long piece of wire.
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That's as tall as the Empire State Building.
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Well, 45 of them.
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But what's he doing there?
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It must be the universe's longest string telephone!
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Hello?
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Hello?
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Prepare for invasion of Earth- Oh, that's not good.
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To actually understand what it's for, we need to look at Faraday's Law of Induction.
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If I move this loop of wire through this magnetic field, a small current is produced.
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You can increase the power generated by using more wire and moving it faster.
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In fact, stick a propeller on the end and now you have yourself a wind turbine.
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This concept made the big brains at NASA go...
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You know how, like, the Earth is like, basically a giant magnet?
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Yeah, bro, totally.
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What if we use like.. a super long wire, bro?
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Huh?
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So 400 million dollars later, this is the plan they came up with.
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Earth has big magnetic field, so we send spaceship with big wire.
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But Earth magnetic field very weak, so we send even bigger wire.
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Then we move spaceships super fast to generate power.
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Then we rule the galaxy.
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The system was called the TSS-1, or Tethered Satellite System.
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1. It had a base satellite, a sub-satellite, and a 20 kilometer long conductive tether connecting them both acting as the wire.
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Now you may have noticed something wrong here.
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In our original example we used a loop of wire because electricity needs a closed loop to flow, and this tether is not a loop.
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But electricity is really just the flow of electrons, and turns out there's a layer of the Earth's atmosphere called the ionosphere, which has a bunch of free electrons just floating around.
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So using a fancy electron collector and emitter, NASA designed a system to create electron flow using the ionosphere, completing the loop.
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In 1992, TSS-1 was launched aboard Space Shuttle Atlantis.
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It successfully reached the ionosphere, and it was finally time to unfurl the 20 kilometer long tether.
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Uh, Houston, we have a problem.
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This screw isn't gonna cut it.
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Okay, swap them out then.
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Hey, we should test everything again to make sure it works, right?
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Nah, it should be good.
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It was not good.
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That beefy screw caused the tether reel to jam up but a whopping 260 meters.
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Pretty much 1% of its maximum length.
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Moral of the story, always test and retest after making any design changes.
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Quite the expensive lesson to learn, but surely they'll get it next time, right?
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Right!
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Ooh, we made it past 260 meters this time! and the tether successfully deployed to its full length of 20 kilom- Um,
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Houston, we have a pro- It was so close, but when the tether reached 19.7 kilometers,
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a small defect in the insulation near the bottom led to a large arc that melted it.
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And that's how we ended up here.
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A giant space noodle floating in the sky.
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It was sighted all over the world, like in Australia, in Hawaii, in Southern USA...
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And a few weeks later, it re-entered the atmosphere, cooking the space noodle once and for all.
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But the big question is, did the experiment work though?
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Well, NASA managed to collect some data, and the tether generated almost 3.5 kilowatts of electrical power.
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Enough to run three toasters at once!
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Okay, that doesn't seem like much, but for context, most small satellites only need one toaster amount of power.
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But despite this, the tethered satellite system missions were abandoned.
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And the results weren't publicized.
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Well, apart from being roasted by the media.
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I guess it is kind of embarrassing to have your mistake plastered in the sky for the whole world to see, but I really hope they try again.
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Because I imagine a night sky in the future where space noodles hang from every spaceship and satellite.
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Hashtag, bring back space noodles.
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Please, I haven't seen the sun in years.
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See you next time!
📺 Stesso Canale
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Vocabolario e note di pronuncia per questa lezione
Questo video contiene 61 frasi e 678 parole da ripetere con lo shadowing. Il parlato dura 4:33. Chi parla mantiene un ritmo costante di circa 149 parole al minuto, comodo per lo shadowing. Solo il 76% delle parole rientra nelle 3.000 più comuni dell’inglese, quindi il lessico è impegnativo.
Vocaboli chiave di questo video
15 parole del video che vale la pena imparare, con pronuncia e significato:
| Parola | Pronuncia | Significato |
|---|---|---|
| wire sostantivo | /ˈwaɪɚ/ | filo, filo metallico |
| satellite sostantivo | /ˈsætəlaɪ̯t/ | satellite |
| loop sostantivo | /luːp/ | cappio |
| generate verbo | /ˈd͡ʒɛn.ə.ɹeɪt/ | generare |
| magnetic aggettivo | /mæɡˈnɛtɪk/ | magnetico |
| atmosphere sostantivo | /ˈætməsˌfɪɹ/ | atmosfera |
| successfully avverbio | /səkˈsɛs.fə.li/ | con successo |
| meter sostantivo | /ˈmitəɹ/ | metro, contatore |
| float verbo | /fləʊt/ | galleggiare |
| electron sostantivo | /ɪˈlɛk.tɹɑn/ | elettrone |
| lesson sostantivo | /ˈlɛs.ən/ | lezione |
| moral aggettivo | /ˈmoɹəl/ | morale |
| telephone sostantivo | /ˈtɛləˌfoʊn/ | telefono |
| layer sostantivo | /ˈleɪ̯ɚ/ | strato |
| string sostantivo | /stɹɪŋ/ | spago, stringa |
I phrasal verb che sentirai
| Parola | Significato |
|---|---|
| come up with verbo | ideare, escogitare |
| end up verbo | andare a finire, finire |
| turn out verbo | risultare |
La grammatica di questo video
Le strutture che chi parla usa di più, con le parole esatte del video:
| Struttura | Nel video |
|---|---|
| Forma passiva be + participio passato — conta ciò che accade, non chi lo fa | is produced · was called · was launched |
| Present perfect have/has + participio passato — un’azione passata che conta ancora adesso | have ever sent · haven't seen |
Pronuncia a cui fare attenzione
Chi parla usa 6 contrazioni e forme ridotte, come doesn't, gonna, haven't. Pronunciale nella forma breve, così come le senti.
- I suoni “sh” e “zh”: invasion /ɪnˈveɪʒən/, hashtag /ˈhæʃˌtæɡ/, insulation /ˌɪnsəˈleɪʃən/
- Parole lunghe — attenzione all’accento: successfully /səkˈsɛs.fə.li/, electricity /ɪˌlɛkˈtɹɪsɪti/, electrical /ɪˈlɛktɹɪkəl/, experiment /ɪkˈspɛɹ.ə.mənt/, insulation /ˌɪnsəˈleɪʃən/
Come esercitarsi con questo video
- Ascolta tutto il video una volta senza parlare e annota le parole che non conosci.
- Fai shadowing frase per frase a velocità normale, ripetendo ognuna finché il tuo ritmo coincide con quello di chi parla.
- Registrati e confronta con l’originale, facendo attenzione a parole come wire, satellite, loop.
Cos'è la tecnica dello Shadowing?
Shadowing è una tecnica di apprendimento delle lingue supportata da studi scientifici, originariamente sviluppata per la formazione dei traduttori professionisti e resa popolare dal poliglotta Dr. Alexander Arguelles. Il metodo è semplice ma potente: ascolti un audio in inglese di madrelingua e lo ripeti immediatamente ad alta voce — come un'ombra che segue il parlante con un ritardo di solo 1–2 secondi. A differenza dell'ascolto passivo o degli esercizi di grammatica, lo shadowing costringe il tuo cervello e i muscoli della bocca a elaborare e riprodurre simultaneamente i modelli di discorso reale. La ricerca dimostra che migliora significativamente la precisione della pronuncia, l'intonazione, il ritmo, il discorso connesso, la comprensione dell'ascolto e la fluidità del parlato — rendendolo uno dei metodi più efficaci per la preparazione alla prova di speaking dell'IELTS e per la comunicazione reale in inglese.