Electromagnetism
Electromagnetism hazards?
what kind of electromagnet pulse might this proposal with the lightning bolt generate
Microwave
Joined: Oct 2003
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Re: magnets
quote:
Originally posted by Leonardo
... two electromagnets, stack one on top of the other so that ... they will repel ... how far can you separate them?
That is virtually unlimited, unless the magnetic field doesn't extend out to infinity.
quote:
Originally posted by Leonardo
how much current will it take for maximum separation ?
Maximum current.
quote:
Originally posted by Leonardo
what difference does it make if they each way one gram or ten tons?
Gravity. There are several latent forces going on here. First, let's get some perspective. If these two inactive coils are all alone out in empty space, then it will take some fixed, and extremely small, amount of energy for them to escape each other. In this case, they would separate to infinity (which is a large separation) without even turning the magnets on. OK, perspective established. Now, on Earth, sitting on a table, these two magnets are accelerating at 9.8 m/s2. The "bottom" magnet (the one closer to the center of the earth) is being accelerated by the table top. It in turn accelerates the other magnet in front of/on top of it by pushing on it. How does this pushing occur? Electrostatics, so they say. What they also say is that there is no such thing as contact because of this mechanism. What it seems you want to do is to exaggerate this lack of contact as much as possible. The reason there is close proximity is that the bottom magnet is accelerating the top magnet. Less force is required to accelerate a smaller weight for a given amount of force. The magnetism will provide a given amount of force. So, the mass matters.
ote:
Originally posted by Leonardo
Lets say the magnets are stacked vertically at 1,000 feet above sea level on a New-Mexico lime stone Plato. Each of the one ton magnets coils receive an equal amount of current simultaneously. How much power would lift the upper magnet? How high could the average lightning bolt lift the magnet if at all? (Approximately)
You need to be more specific than this. The issue of altitude and location on the Earth is pretty insignificant.
You can think of the magnetic force between the coils two ways: 1) use the biot-savart law, 2) treat them as bar magnets to first order, or something else to higher order. Either way, though, you should specify your geometry.
1 ton magnet will require 1 ton of force to overcome the acceleration of gravity that is already present. Any extra force will lift the magnet. The magnet will be lifted until the force from the magnetic field drops down to 1 ton (roughly). Without specifics, this is too complicated to generalize in more detail.
I am unfamiliar with the biot-savart law , for that mater unfamiliar with the particular behaviors and formulas needed for the precise forecasting of magnetic behavior beyond the very rudimentary . I am though quite curious about the feasibility of introducing the current of a lightning bolt to these two magnets ( simultaneously ) what ever their dimensions. What do you think I might witness upon the introduction and in the aftermath?
