0
Paving over a grass field reduces the surface area available for convection to take place due to the interruption of air flow. This can lead to a decrease in convective heat transfer. However, conduction will increase as the paved surface provides a more direct pathway for heat to transfer compared to the insulated nature of soil and grass.
What else can I help you with?
What is Conduction motor?
A conduction motor is a type of electric motor that operates by conducting electrical current through a coil or loops of wire within a magnetic field, which generates mechanical force to produce motion. Conduction motors are commonly found in various appliances and machinery due to their simplicity and reliable operation.
What occurs when a rapidly rotating conductor is stirred by convection to produce a magnetic field?
When a rapidly rotating conductor is stirred by convection, it generates a phenomenon known as a dynamo effect. This effect causes the motion of the conductor to induce electric currents, which in turn create a magnetic field. The resulting magnetic field can enhance the overall magnetic properties of the system.
How is conduction and induction different?
Conduction is the transfer of heat through direct contact between two substances, where heat is transferred by the collision of particles. Induction is the process of generating an electrical current in a conductor by exposing it to a changing magnetic field, where the electrical current is induced without direct contact between the conductor and the source of the magnetic field.
What is the difference between conduction and induction?
Conduction is a process of static electricity when energy is able to flow from one object to another when they are touching. Induction is a process of static electricity when energy is able to flow from one object to another without touching.
What are the differences between charging by induction and charging by conduction?
Charging by induction involves using an electric field to transfer charge without direct contact, while charging by conduction involves direct contact to transfer charge between objects.
How does conduction and convection are affected by paving over a grass field?
It is harmful and effects the air pollution
Transfer of heat by hot liquids and gases?
Convection is the transfer with in the fluid. If a container of hot liquid is touching something then it is conduction. If the heat is travelling through the air then it is radiation.
Where does the convection that causes earths magnetic field?
The convection that causes Earth's magnetic field happens in Earth's molten outer core.
Difference between conduction current and displacement current?
Conduction refers to electrons or, "holes" in the case of semiconductors, which are conducted, under the influence of an electric field, from one place to another. However, in semiconductor there is a phenomenon called "drift current" which is more a function of very small field and random motion from one place, within the material, to another place. But neither of these is ever referred to as a "convection" current. The term "convection" is used in connection with air currents moved by differences in temperature between one place and another. Hot air tends to rise while cold air tends to fall. Consequently, a circulation of air, due to temperature is called a convection current.
What has the author Latif M Jiji written?
Latif M. Jiji is a scholar known for his research in the field of heat transfer and fluid dynamics. He has written numerous scientific papers and books on these subjects, focusing on topics such as convection heat transfer and porous media flows.
Are convection currents responsible for the magnetic field?
Yes, of course...
What is a arc?
discharge: electrical conduction through a gas in an applied electric field
What are FETs?
Field Effect Transistor A: basically a silicon bar where the conduction is controlled by a field since there is no connection to the gate the impedance is very high
How does convection differ from convection?
Well it differs in this way. Conduction is when heat is applied to an object and causes mainly the point of contact to be heated. For example lighting a match under a metal rod. It will mainly heat the point of contact, eventually heating the rest of the rod. Additionally, conduction can be referred to when talking about electricity and whether a material can conduct or not. Convection is different as it disperses heat evenly through a liquid. For example, boiling water. A single point of the water is heated, then it rises, allowing colder water from the top to fall, heat, rise and creates a current, evenly heating the water. The same example can be used when referring to preheating an oven. Hopefully this helps. Convection involves the actual movement of fluid materiel, either liquid or gas, usually in a gravitational field where the difference in temperature causes difference in density which in turn causes fluid motion. Conduction can and does occur concurrently with convection, but does not involve the macroscopic movement of materiel. Conduction can occur in gasses or liquids, but also in solids. Conduction occurs when the thermal vibrations of hotter mater are transferred to cooler matter. There is a third method of heat transfer, Radiation. Radiation can occur in all three phases of matter, but can also transfer heat across a vacuum. Usually thermal radiation is in electromagnetic wavelengths too long to be visible, but in some situations like an incandescent bulb or the sun, it can be seen.
Do compasses detect fluctuations in convection in the mantle?
Compasses do not detect fluctuations in convection in the mantle. Compasses align with Earth's magnetic field, which is generated by the movement of molten iron in the outer core. Convection in the mantle occurs in the solid rock layer above the outer core, and does not directly influence the magnetic field detected by a compass.
The convention that causes earths magnetic field happens in earths?
core
Earth is like a giant magnet because of convection currents in the?
Earth's outer core, composed of molten iron and nickel, experiences convection currents due to heat from the inner core. These currents generate the Earth's magnetic field, acting like a giant magnet with a north and south pole. The movement of these convection currents creates the magnetic field that surrounds and protects the planet.
