How was the thermos cup invented by human beings? Who invented it? The modern thermos cup was invented by British physicist Sir James Dewa in 1892. At that time, he was working on the research of liquefied gas. To liquefy gas at low temperature, he first needs to design a container that can isolate the gas from the outside temperature, so he asks the glass technician Berg to blow a double-layer glass container for him. Apply mercury to the inner walls of the two layers, and then pump out the air between the two layers to form a vacuum. This kind of thermos, also called Dupont, can keep the liquid in it unchanged for a certain period of time regardless of its temperature. Because the thermos bottle is mainly used to keep warm hot water in the family, it is also called thermos bottle.
the principle of the thermos bottle is that there is a double-layer glass liner in the middle of the thermos bottle, and the two layers are vacuumized and plated with silver or aluminum. Vacuum state can avoid thermal convection, glass itself is a poor conductor of heat, and silver-plated glass can reflect the thermal energy radiated from the inside of the container to the outside. The thermos cup has many layers, and its interlayer is generally vacuum to prevent heat conduction; Then silver plating, which can block the thermal radiation. Some cups are covered with cork to prevent heat conduction.
in order to cater to human life, the thermos has now developed into a mini-version of the thermos, that is, our commonly used hand-held thermos, which is more conducive to our daily life. Today, most people have got rid of thermos bottles, relying more on thermos cups and adopting the same principle as thermos bottles. Vacuum does not conduct heat, the temperature in the thermos cup is constant, and the heat emitted is very slow.
thermos bottles are usually called thermos bottles and thermos bottles. It was originally a double glass container, and the inner and outer walls of the double glass container were sealed at the top. It reduces conduction by pumping air out of the middle layer. The inner wall of the thermos bottle is also plated with a layer of mercury, which can greatly reduce the heat transferred by radiation. These plans will make it difficult to change the temperature of the liquid in the glass bottle. The above is the answer to the question of how the thermos cup was invented by humans and who invented it.