10 Abubuwan Ban Sha'awa About Historical inventions and discoveries

Transcript:

Languages:

• An fara gano takarda bayan gida a cikin 1857 na Josephan Gaye, amma takarda bayan gida bai zama sananne ba saboda farashin tsada.
• Fim da jirgin saman Wright ne a cikin 1903, amma jirgin bai iya tashi sama da 12 seconds.
• Alexander ya gano wayar ta hanyar Alexander Graham Barry a cikin 1876, amma bai sami manufar wayar ta kai tsaye ba, amma ta danganta da gano wasu.
• Alexander Forming da Alexander Forming ya gano shi a cikin 1928, amma wannan gano ba a amfani da shi kai tsaye saboda har yanzu yana buƙatar ƙarin bincike.
• Farkon rediyo ne aka fara gano rediyo a shekarar 1895, amma wannan gano ba shi da kyau sosai saboda har yanzu ana iyakance shi nan da nan da ingancin watsa shirye-shirye.
• An gano injinan wasan kwaikwayon na Chesterny a 1938, amma na'urar daukar hoto ba ta zama sananne ba saboda yana da tsada kuma yana da wuyar amfani.
• Farkon motar ta fara gano motar ta Karl Benz a cikin 1885, har yanzu motar har yanzu tana amfani da injin man fetur kuma yana da matsakaicin saurin gudu na 10 km / awa.
• An gano jirgin sama na Frank Whittle a cikin 1930s, amma jirgin saman jet bai samar da taro kai tsaye ba saboda har yanzu yana iyakance a cikin fasaha da kuma farashin samarwa.