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The design of the vacuum flask minimizes heat transfer by conduction because it has a double-walled structure with a vacuum between the walls. This vacuum acts as an insulator, preventing heat from transferring through conduction between the inner and outer walls of the flask.
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How does a vacuum flask reduce heat transfer by conduction?
A vacuum flask reduces heat transfer by conduction by having an airless space between two layers of glass. Since air is a poor conductor of heat, this design minimizes heat transfer through conduction. Additionally, the reflective surface on the inner wall of the flask reduces heat transfer by radiation.
Why do you think the thermos bottle contains a vacuum or space from which the air has been removed?
The vacuum or empty space in a thermos bottle helps to minimize heat transfer by convection and conduction. Without air molecules to transfer heat, the vacuum acts as insulation to keep the contents either hot or cold for an extended period.
Does conduction work in vacuum?
No, conduction does not work in a vacuum because it requires a medium, such as a solid, liquid, or gas, for the transfer of heat. In a vacuum, there are no particles to transfer heat through direct contact, so conduction is not possible.
How can the structure of the vacuum flask minimise energy transfer by conduction convection and radiation?
The structure of a vacuum flask minimizes energy transfer by conduction, convection, and radiation by having a double-walled design with a vacuum layer between the walls. This vacuum layer acts as an insulator, reducing heat transfer through conduction and convection. Additionally, the reflective surface on the inner wall minimizes radiation heat transfer.
In a vacuum there is no matter . do you think conduction can take place in vacuum?
Conduction cannot occur within a vacuum because it requires a substrate (i.e. matter) for energy to be transferred.
Why does a vacuum flask keep water hot?
A vacuum flask uses a double-walled design with a vacuum between the walls to minimize heat transfer through conduction or convection. This insulation helps retain the heat of the water inside, keeping it hot for a longer period of time.
Why are vacuum flasks called vacuum flasks?
Vacuum flasks are named so because they have a double-wall design with a vacuum-sealed space between the walls. This vacuum insulation helps to minimize heat transfer by conduction or convection, keeping hot liquids hot and cold liquids cold for an extended period of time.
How does a vacuum flask reduce heat transfer by conduction?
A vacuum flask reduces heat transfer by conduction by having an airless space between two layers of glass. Since air is a poor conductor of heat, this design minimizes heat transfer through conduction. Additionally, the reflective surface on the inner wall of the flask reduces heat transfer by radiation.
Why do you think the thermos bottle contains a vacuum or space from which the air has been removed?
The vacuum or empty space in a thermos bottle helps to minimize heat transfer by convection and conduction. Without air molecules to transfer heat, the vacuum acts as insulation to keep the contents either hot or cold for an extended period.
Does conduction work in vacuum?
No, conduction does not work in a vacuum because it requires a medium, such as a solid, liquid, or gas, for the transfer of heat. In a vacuum, there are no particles to transfer heat through direct contact, so conduction is not possible.
How can the structure of the vacuum flask minimise energy transfer by conduction convection and radiation?
The structure of a vacuum flask minimizes energy transfer by conduction, convection, and radiation by having a double-walled design with a vacuum layer between the walls. This vacuum layer acts as an insulator, reducing heat transfer through conduction and convection. Additionally, the reflective surface on the inner wall minimizes radiation heat transfer.
In a vacuum there is no matter . do you think conduction can take place in vacuum?
Conduction cannot occur within a vacuum because it requires a substrate (i.e. matter) for energy to be transferred.
How does a vacuum flask reduce the rate of energy transfers?
A vacuum flask reduces the rate of energy transfers by using a vacuum between two walls to minimize heat conduction, which prevents heat from entering or escaping the flask. Additionally, the inner wall is coated with a reflective material to minimize heat radiation, further reducing energy transfer.
What can't you get conduction or convection in?
Conduction and convection cannot occur in a vacuum because they both rely on the movement of matter to transfer heat. In a vacuum, there is no medium for heat to be transferred through conduction or convection. Radiation is the primary mode of heat transfer in a vacuum.
What features of a thermos flask reduce heat loss by?
A vacuum insulated design reduces heat transfer by eliminating air conduction and convection. Reflective interior surfaces minimize radiation heat loss. Double walls with a low conductivity material like stainless steel further inhibit heat transfer.
Why conduction can't occur in a vacuum?
Conduction requires the presence of a medium such as solid, liquid, or gas for heat transfer to occur. In a vacuum, there are no particles to transfer heat energy through collisions, so conduction cannot take place. Heat can only be transferred in a vacuum through radiation.
Why is there no heat transfer by convection or conduction through a vacuum?
Conduction needs a conducting medium. Convection needs something to convect. Neither exists in a vacuum.
