what creative thought did dewar have when thinking about studying liquid oxygen
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I can give you a small part from the article The greatest of physics history,which gives an account of dewer experiments with liquid oxygen.
"It took more than six years, but ultimately Dewar prevailed in his quest to liquefy air on June 5, 1885.
By 1891, Dewar could produce liquid oxygen in large quantities, and also showed that it and liquid ozone were strongly attracted by a magnet. But his desire to investigate the liquefaction of gases at extremely low temperatures further were hampered by the lack of a means to keep the gases cold enough long enough to study them. The liquefied gases absorbed heat from the ambient air too quickly and evaporated back into a gaseous phase. He tried boxes filled with powdered cork or hay, including one of his wife’s own hat boxes.
He also studied the electrical properties of supercooled gases from 1892 to 1895 with Ambrose Fleming. His discovery that cooled charcoal could help create high vacuums, in large part because charcoal was so effective at absorbing gases, particularly at very low temperatures, resulted in a better vacuum.
Dewar came up with the idea of using one glass vessel inside another, the double walls separated by a thin vacuum layer. This kept the liquids cold for longer periods of time and helped revolutionize low-temperature research. Fellow scientist Heike Kamerlingh Onnes called it a “magnificent invention, which may be called the most important appliance for operating at extremely low temperatures.”
This was the technological breakthrough Dewar needed to continue his work. He gave a series of six Christmas Lectures in December 1893, concluding on January 8, 1894, in which he liquefied some of the air in the lecture hall for the audience. He showed it could remain in liquid form for a good while if properly enclosed in a “Dewar flask.” Two weeks later, he successfully produced solid air at the January 19 meeting of the Royal Institution."
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BRAINLIEST✌✌
"It took more than six years, but ultimately Dewar prevailed in his quest to liquefy air on June 5, 1885.
By 1891, Dewar could produce liquid oxygen in large quantities, and also showed that it and liquid ozone were strongly attracted by a magnet. But his desire to investigate the liquefaction of gases at extremely low temperatures further were hampered by the lack of a means to keep the gases cold enough long enough to study them. The liquefied gases absorbed heat from the ambient air too quickly and evaporated back into a gaseous phase. He tried boxes filled with powdered cork or hay, including one of his wife’s own hat boxes.
He also studied the electrical properties of supercooled gases from 1892 to 1895 with Ambrose Fleming. His discovery that cooled charcoal could help create high vacuums, in large part because charcoal was so effective at absorbing gases, particularly at very low temperatures, resulted in a better vacuum.
Dewar came up with the idea of using one glass vessel inside another, the double walls separated by a thin vacuum layer. This kept the liquids cold for longer periods of time and helped revolutionize low-temperature research. Fellow scientist Heike Kamerlingh Onnes called it a “magnificent invention, which may be called the most important appliance for operating at extremely low temperatures.”
This was the technological breakthrough Dewar needed to continue his work. He gave a series of six Christmas Lectures in December 1893, concluding on January 8, 1894, in which he liquefied some of the air in the lecture hall for the audience. He showed it could remain in liquid form for a good while if properly enclosed in a “Dewar flask.” Two weeks later, he successfully produced solid air at the January 19 meeting of the Royal Institution."
Hope it helps
Cheers.
BRAINLIEST✌✌
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