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The outer case of a thermos flask is usually made of a material with low thermal conductivity, such as plastic or stainless steel. This helps to reduce heat transfer between the contents of the flask and the external environment, thereby minimizing heat loss or gain. Additionally, the vacuum insulation between the inner and outer layers of the flask further prevents heat transfer by convection and conduction.
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Where do you get vacuum in the vacuum flask?
The flask works because there is a gap between the inner and outer walls of the flask. During the manufacturing process the air in the gap is extracted and the opening is sealed - creating a vacuum between the walls. Heat transmits rapidly through air - but a lot less rapidly, in fact only very, very slowly, through a vacuum. A vacuum flask not only keeps heat in, it also keeps it out. If you put iced water into a vacuum flask it will stay cold for a very long time.
What is the outer energy level for the atom having the electron configuration of 1s22s22p63s23p64s23d104p6?
The outer energy level for an atom is determined by the highest principal quantum number, n. In this case, the highest n value in the electron configuration is 4. Therefore, the outer energy level is the fourth energy level.
What material is made from the outer casing of a helmet?
Helmets are typically made from materials such as polycarbonate, fiberglass, or carbon fiber for their outer casing, which provides protection and impact absorption in case of accidents. These materials are chosen for their durability, lightweight properties, and ability to absorb and distribute impact energy effectively.
What is the case of a watch?
A watch case is the outer covering that houses the watch movement, dial, and other components. It can be made from various materials such as stainless steel, titanium, gold, or ceramic, and comes in different shapes and sizes to suit different styles and preferences. The case not only protects the internal components but also contributes to the overall aesthetics of the watch.
How does the layers of a thermos bottle help keep coffee hot?
A Thermos, or in its generic name a vacuum bottle, keeps hot drinks hot (or cold drinks cold) by not allowing heat to flow out (or in, as the case may be). That sounds like a stupid answer but it's really the heart of the matter. Heat flows from hot surfaces to cold ones, and it can do so by three routes; conduction, convection, and radiation. Conduction is the flow of heat through solids. One example of this is that if you held a nail and put one end of it into a candle flame, the other end would rapidly become too hot to hold, even though it isn't in the flame itself. Convection happens when a fluid, such as water or air, is warmed against a hot surface and then flows around until it touches a colder one, cooling itself and warming the cold surface. Radiation occurs when hot atoms emit infrared radiation. The radiation can then "shine" away"from the object, carrying a bit of heat energy with it, thereby making the hot object that little bit cooler. A vacuum bottle is designed to minimize all three kinds of heat flow. The "guts" of the vacuum bottle is a double-walled container with a vacuum, or in other words no air, between the container's inner wall and outer wall. The inner wall and outer wall don't touch everywhere, only in limited areas such as at the bottle's neck. The inner and outer surfaces are also polished or silver-plated to give them a high shine, like a mirror. Convection could happen if the hot inner shell of the bottle heated air between the two shells, but there is no air between the shells, so that means of heat flow is eliminated. Heat could and does conduct from the inner shell to the outer shell and thus escape, but because the inner and outer shells only touch each other in very small areas this effect is far, far slower than it would be in ordinary containers. Heat does escape as infrared radiation, but a mirror will reflect infrared the same way it will reflect visible light, so most of the infrared that escapes the inner shell is reflected and sent back inside. The effect of this is that heat flow still happens, but it is slowed down enough that it takes many hours for coffee inside a vacuum bottle will finally cool down to room temperature.
What is a casing deck on a submarine?
A casing deck is another term for a submarine's superstructure hull, which is the outer hull that protects the inner pressure hull. Using a thermos bottle as an analogy, the inner container where liquid goes would be the pressure hull, and the outer case which protects it the superstructure, or outer hull.
What are some unique gift ideas for a friend who loves collecting flask-shaped items?
Some unique gift ideas for a friend who loves collecting flask-shaped items could include a custom-engraved flask, a vintage or antique flask, a flask-shaped keychain, a flask-shaped phone case, or a flask-shaped decorative item for their home.
Where do you get vacuum in the vacuum flask?
The flask works because there is a gap between the inner and outer walls of the flask. During the manufacturing process the air in the gap is extracted and the opening is sealed - creating a vacuum between the walls. Heat transmits rapidly through air - but a lot less rapidly, in fact only very, very slowly, through a vacuum. A vacuum flask not only keeps heat in, it also keeps it out. If you put iced water into a vacuum flask it will stay cold for a very long time.
What does the No 95 stamped on the bottom of a silver flask mean?
The "No 95" stamp on the bottom of a silver flask typically refers to the silver purity or content of the flask. In this case, it likely indicates that the flask is made of sterling silver, which is 92.5% pure silver.
How does a flask keep hot liquid hot?
There are several types of flasks. They are all containers or vessels, usually designed to carry a liquid and often made of glass. They sometimes have a cap and are narrower at the top, but usually do not have a handle.The first distinction is flasks that are used in a laboratory. There are several types, including erlenmeyer flasks, florence flasks, round bottom flasks, distilling flasks, volumetric flasks, and others. A description of each one is listed to the left under the Related Questions links.Another type of flask is instead used to carry alcohol. It is a small container usually shaped to fit in a back pocket. It can hold any liquid but usually was designed for alcohol.See the Related Questions and Web Links to the left for more information and pictures of different types of flasks.
What is a outer case of a battery made of?
Zinc
What is transmission case?
its the outer aluminum or steel case the surrounds the internal componrnts
What is the case or outer shell of the computer?
Its called the case. http://www.answerblip.com/faqabout/computers
Why you use inner loop and outer loop?
Sometimes you have to use nested loops, in this case one of them is the outer, the other is the inner.
What is the thick outer case of the eye?
The sclera is the thick outer casing of the eye, in most cases it is white, however in animals it is black.
What prevents the motherboard from touching the bottom of the case?
spacers on older models...screws on newer
How does sterilisation prevent pregnancy?
In case of female sterilization, you have both the fallopian tubes ligated. This prevents the union of ovum and the sperm. In case of the male sterilization, you have both the vas diferens ligated. This prevents the appearance of the sperms in the semen. This prevent the union of the sperm with the ovum.
