Why can't we get free energy from magnet motors, according to scientists?

[Gearhead]

The present theory may be right.  The present theory does not explain magnetism very well.  It is supposed that the magnet contains magnetism.  Perhaps magnetism is only a distortion of a present field.

The question arises; If there is a field present, why cant we detect it?

Answer; according to the theory of relativity, space time exits throughout the universe therefore there is a field present everywhere.

[Omega_0]

Note that CoE applies only to closed systems.
No one knows (not even top scientist !) whether our universe is a closed or an open system. This is for sure.
One wonders from where did all this enormous amount of energy come from, it must have come from somewhere, all this energy and more is coming in, resulting in all this expansion and flying away of galaxies.

So in essence the answer to free energy lies in the answer to the origin of universe itself.

[shruggedatlas]

If the device is to weak, like 101%, then no one will be interested in commercializing the invention.

The bleak part is that no one has yet to even demonstrate 101% in a closed system. 

However, I believe you are wrong when you state that a 1.2 (120%) efficiency is insufficient to create a profit motive.  Remember that out of the 120% going out, 20% can be taken out and 100% put back in, essentially creating free energy from that point forward, subtracting for maintenance and upkeep.  It's not like you have to keep putting power into the system. 

Personally, however, I would be very surprised to see even a 101% system, much less 120%.  I am glad someone is trying though.

[Omega_0]

Even 101% OU is more than sufficient. Just cascade (connect end to end) N such machines and you'll get (1.01)^N times the input. It scales up very fast.

We can consider atomic energy as OU. You get a trillion times output. However it has been stamped as dirty and is being used mostly for destructive purposes. Given a chance it can solve all problems in a very little time. But mil and politicians are sitting on it and won't let the tech progress any more.

[DarkLight]

Atomic reactors of today are too dangerous and big. Fast neutrons and gamma radiation are very difficult to shield.
Atomic batteries that using alpha and beta radiation can be the future.
Alpha and beta radiation are just high voltage. Very ease to shield and not so dangerous.
Such batteries are made already. They can work about 12 years without changing the radioactive material inside (radium mostly). They are not big and heavy.

http://www.livescience.com/technology/050513_new_battery.html