Recent content by li dan

Yes, the pressure gradient can cause convection, and the diffusion is caused by Brownian motion, both of them can exist at the same time, but the diffusion is not caused by the pressure gradient, so the mass transfer caused by the diffusion will not react to the vessel through the pressure gradient.

According to " In a phase with uniform temperature, absent external net forces acting on the particles, the diffusion process will eventually result in complete mixing" in Wikipedia's "molecular diffusion",Therefore, when the mass is transferred to the right due to diffusion, no reaction force...

Assuming the solution has an infinite number of vertical dividers, and the pressures on both sides of the dividers must be equal to comply with Newton's third law. Moreover, unequal pressure will cause the solution to flow, but diffusion is caused by temperature, so the pressure of the solution...

What force acts on the container and causes it to move?

The phenomenon of diffusion is a transport phenomenon based on the thermal motion of molecules, a process in which molecules are transported from a region of high concentration to a region of low concentration by Brownian motion. Let's assume that there is a car, the road under the wheels is...

In superconducting state, There is a current-carrying wire between the superconductor and the magnet，Is it possible to generate Ampere's force between the superconductor and the current-carrying wire?

Refers to the difference in static distance,Will the different distances between magnets and superconductors lead to different interaction forces between wires and superconductors?

In superconducting state, If the superconductor and the guide line are stationary, will the force between the the guide line and the superconductor change when they are close to or far away from the magnet?

Thank you.As shown in the figure, the thruster is equipped with a geomagnetic field convergence layer, which is a superconducting material. The geomagnetic field convergence layer repels and blocks the magnetic flux of the geomagnetic field, so that the magnetic flux of the geomagnetic field...

My English level is not good, the translation of the above post may not be accurate, re-translated as follows: Can a thruster using geomagnetic fields and superconductors generate a thrust? As shown in the figure, the thruster is equipped with a geomagnetic field convergence layer, which is a...

is to place the wire at the position of the arrow, the two ends of the wire connected to the battery into the current, the wire and the magnet between the Ampere force, in the case of superconductors and no superconductors, ampere force is different？

Thank you very much for your answer. Assuming that the energized conductor is placed at the position of the arrow, regardless of the force between the energized conductor and the superconductor, the ampere force between the energized conductor and the magnet is F1. The ampere force between the...

As shown in the figure, in the Meisner effect, the magnetic field of the magnet bypasses the superconductor. My question is, does the magnetic B field belonging to the magnet increase at the arrow indicating position? Or is there no change in the intensity of the magnetic field that belongs to...

Do you think there will be lift, but the lift is too weak?

The external magnetic field is concentrated according to the Meissner effect of the superconductor. From the following figure, the external magnetic field bypassing the partial region of the superconductor is enhanced. I don't understand the part of the magnetic field that you are talking about...