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Total: 546 intrebari

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De ce au fost necesare masini cu aburi cu turatie mare?

by Sobo on November 07, 2010

1 answers

283 views

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Din ce cauza a fost necesara construirea primului ciocan urias, actionat cu aburi?

by Grig on November 07, 2010

1 answers

376 views

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Ce se intelegea prin 'dezintegrator'?

by Marcel on November 07, 2010

1 answers

280 views

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Cine a realizat prima busola destinata vapoarelor din fier?

by Florina on November 07, 2010

1 answers

455 views

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Cine a realizat primele anvelope din cauciuc umplute cu aer?

by gogu on November 07, 2010

1 answers

333 views

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Ce viteza a avut primul vapor cu turbina?

by Madalina on November 07, 2010

1 answers

290 views

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Ce se afirma prin teoremele curentilor derivati ale lui Kirchhoff?

by Adrian on November 07, 2010

1 answers

281 views

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Ce calitati deosebite prezenta anilina?

by Corina on November 07, 2010

1 answers

329 views

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De cand se utilizeaza de fapt cuptorul destinat producerii caramizii?

by Dana on November 07, 2010

1 answers

299 views

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Cine a fost baronul Justus von Liebig?

by Gabriela on November 07, 2010

1 answers

303 views

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Cine a construit prima instalatie pentru desalinizarea apei sarate, care functiona cu energie solara?

by Madalina on November 07, 2010

1 answers

647 views

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Cine a construit cuptorul destinat producerii la scara industriala a caramizii?

by Adrian on November 07, 2010

1 answers

296 views

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Cine a inventat acul pentru injectii?

by Adriana on November 07, 2010

1 answers

294 views

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Primul tren cu cremaliera a fost intrebuintat pe un traseu montan?

by Corina on November 07, 2010

1 answers

472 views

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Ce era cu totul deosebit la microfonul cu carbune inventat de Edison?

by Armand on November 07, 2010

1 answers

573 views

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Ce avantaj oferea procedeul de producere a sodei elaborat de Solvay?

by Oli on November 07, 2010

1 answers

280 views

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Cum a functionat primul cablu telegrafic transoceanic, prin intermediul caruia se asigura legatura intre Europa ...

by Costi on November 07, 2010

1 answers

365 views

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De cand dateaza prima nava de razboi cu motor cu aburi?

by Marin on November 07, 2010

1 answers

476 views

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Ce erau asa-numitele 'birje cu aburi'?

by Marius on November 07, 2010

1 answers

286 views

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Cine a introdus in limbajul tehnic termenul de 'amestec eutectic'?

by Inu on November 07, 2010

1 answers

320 views

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Cine a descoperit forta electromotoare?

by Sorin on November 07, 2010

1 answers

517 views

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De cand exista sticla suflata cu masina?

by Coso on November 07, 2010

1 answers

371 views

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Cine a inventat aparatul destinat 'maruntirii curentului continuu'?

by Didi on November 07, 2010

1 answers

353 views

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Ce era mortierul Palmerston?

by EU on November 07, 2010

1 answers

283 views

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Cine a descoperit nitroglicerina?

by Sorin on November 07, 2010

1 answers

325 views

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Cand a descoperit Faraday fenomenul de inductie?

by Didi on November 07, 2010

1 answers

309 views

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Ce cauta albusul pe placa fotografica?

by Zany on November 07, 2010

1 answers

277 views

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Cand a devenit becul un produs ieftin?

by Octavian on November 07, 2010

1 answers

469 views

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De cand este folosit cu succes burghiul spiral?

by Miron on November 07, 2010

1 answers

281 views

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Ce cauta fierul in beton?

by gogu on November 07, 2010

1 answers

284 views

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Cine si-a luminat atelierul cu un bec de fabricatie proprie?

by Armand on November 07, 2010

1 answers

287 views

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Cine a fost Friedrich Wohler?

by Marin on November 07, 2010

1 answers

284 views

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Cand a devenit Wattul o unitate de masura recunoscuta in mod oficial?

by Sobo on November 07, 2010

1 answers

407 views

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Cine a formulat ecuatia de stare Van-der-Waals?

by Lucy on November 07, 2010

1 answers

373 views

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Ce este scala Thomson?

by Madalin on November 07, 2010

1 answers

279 views

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Ce cauta fonograful la telefon?

by Miron on November 07, 2010

1 answers

284 views

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De ce se poate afirma ca Otto Lilienthal a avut o contributie deosebita ta progresul ...

by Gilda on November 07, 2010

1 answers

276 views

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Se poate produce curent prin franare?

by Octavian on November 07, 2010

1 answers

283 views

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De la cine provine numele locomotivei Mallet?

by Mira on November 07, 2010

1 answers

295 views

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Unde au fost construite primele instalatii destinate producerii energiei geotermice?

by Marin on November 07, 2010

1 answers

307 views

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