This video is a life story of James Dewar it talks about his schooling, the many experiments he came out with and the what happened to his ... ... <看更多>
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This video is a life story of James Dewar it talks about his schooling, the many experiments he came out with and the what happened to his ... ... <看更多>
British Inventors, Vacuum Flask, Chemist, Inventions,. More like this ... italian physicist Guglielmo Marconi inventor of wireless radio, Nobel. ... <看更多>
July 19, 2019 at 5:30 AM ·. Invention of Vacuum Flask | Science Marvels | Hungama Kids. Let's take a look at the invention of Vacuum Flask. ... <看更多>