Lenzs law

[flight567]

in all seriousness though, how would it be less efficient than a gas engine? Honda say's that they can only harness about20% of the energy available in gasoline, so we are waisting 80% of the power. i suppose i could be wasting more... but that's hard to measure without having the project done first.

the point of this idea is to directly power the wheels. the electro magnet sits behind the permanent magnet and is driven by A/C,which forced the magnet back and forth (theoretically at least lol) on a rod the rod will be connected to a hinge that is able to move up and down, on one side,then to the wheel directly on the otherside, so that it pushes the wheel forward then on the return will pull it back completing one rotation of the wheel. i have no clue if that's going to work, but it's an idea at least...

[raisindot]

in all seriousness though,

Sorry. You're in the Clownhouse now. No seriousness allowed.

[flight567]

Sorry. You're in the Clownhouse now. No seriousness allowed.

oh, duh! lol, i forgot, i accept my hundred lashes.

[jwcarlson]

in all seriousness though, how would it be less efficient than a gas engine? Honda say's that they can only harness about20% of the energy available in gasoline, so we are waisting 80% of the power. i suppose i could be wasting more... but that's hard to measure without having the project done first.

the point of this idea is to directly power the wheels. the electro magnet sits behind the permanent magnet and is driven by A/C,which forced the magnet back and forth (theoretically at least lol) on a rod the rod will be connected to a hinge that is able to move up and down, on one side,then to the wheel directly on the otherside, so that it pushes the wheel forward then on the return will pull it back completing one rotation of the wheel. i have no clue if that's going to work, but it's an idea at least...

Where's the A/C coming from?

[john187]

Sorry,

I've got bad news for you: magnetic fields do no work. That is a fundamental law of physics. As fundamental as Newtons Laws or any others. No magnetic field will "push" your piston. However, a magnetic field could be used to induce a current which could be used to create an electric field but why not just create it directly with electric current?

I think what your after is rotary motion, such as seen in an electric generator or motor. Search "magnetic fields do no work" another good related one is "no magnetic monopoles." You can buy an electric motor kit online and learn about this. Neat stuff and certainly worth your study.

John

Ps. How long have you been shaving? ;)

[cb91710]

Sorry,

I've got bad news for you: magnetic fields do no work. That is a fundamental law of physics. As fundamental as Newtons Laws or any others. No magnetic field will "push" your piston. However, a magnetic field could be used to induce a current which could be used to create an electric field but why not just create it directly with electric current?

I think what your after is rotary motion, such as seen in an electric generator or motor. Search "magnetic fields do no work" another good related one is "no magnetic monopoles." You can buy an electric motor kit online and learn about this. Neat stuff and certainly worth your study.

Magnetic fields do no work? How does an electric motor work if not through the use of magnetic fields?
Power is used to generate a field that opposes/is opposed by another field, either from a permanent magnet or from another coil, and the motor spins.
Magnetic fields do no work? Explain that to the guys building linear induction and mag-lev trains and weapons.

What I'm gathering he is attempting to do is to basically build a linear-induction electric motor using a permanent magnet piston.
No, it won't be nearly as efficient as a conventional rotary motor, since he will have mechanical losses in the conversion from linear to rotary, and I'm sure the efficiency of the motor itself will be less due to the requirement that the piston move through a "cylinder" of sorts, rather than being completely encased (since magnetic fields LOVE spherical containers).

[JellyFox]

Sorry,

I've got bad news for you: magnetic fields do no work. That is a fundamental law of physics. As fundamental as Newtons Laws or any others. No magnetic field will "push" your piston. However, a magnetic field could be used to induce a current which could be used to create an electric field but why not just create it directly with electric current?

I think what your after is rotary motion, such as seen in an electric generator or motor. Search "magnetic fields do no work" another good related one is "no magnetic monopoles." You can buy an electric motor kit online and learn about this. Neat stuff and certainly worth your study.

John

Ps. How long have you been shaving? ;)

I don't think he's trying to extract work from the induced field, but trying to work out the energy loss it will cause by applying resistance to the piston.

[cb91710]

Okay... Clarification, I get that the magnetic field does no work in that it is merely like a battery (or hydrogen)... it is an energy transportation or conversion medium.

But WRT to what the OP wants to do... it will function.
The magnetic field will "push" and "pull" the piston based on the electrical current applied to the static coil(s).

[john187]

The only thing a magnet can do is induce another magnetic field in another magnet or ferromagnet. This has been written about extensively. I can't argue it here I encourage you're further research.

John

[flight567]

but at it's base all a magnetic field is, is electrons moving in the same direction isn't it? when a magnetic field comes into contact with another, whos electrons are moving in the opposite direction they pull towards each other. it's the basic function of magnets. at least as i understand them.
also, isn't the only thing that can "induce" a field a charge? that changes the direction of the elcrtons?