PDA

View Full Version : (free energy) magnetic generators



Mars
25-10-2012, 19:15
a thread on the idea of using magnets (or something else) to create a perpetual motion source of energy

some videos that prove that the concept works:
http://www.youtube.com/watch?v=uTtq3ALAtDE&feature=youtu.be
http://www.youtube.com/watch?v=icTeEATQlDU&feature=related
http://www.youtube.com/watch?v=zqG-TL0WnjE&feature=related

but I can't find any professional designs, only as DIY
too low in capacity to be useful, or energy conspiracy material?

Avian
25-10-2012, 20:45
Mythbusters tested that (it appears the video is even in the list to the right). It doesn't work.
(unsurprisingly)

Basically it will spin a little while until friction makes it stop and once you hook up a generator to it (or anything else with a load) it stops even sooner. Thus the energy you spend in pushing it and making it start spinning is more than you can get out of the dynamo.

theunwantedbeing
25-10-2012, 22:16
Those video's aren't proof at all.

1. None of them speed up when put into motion
2. None of them are hooked up to anything to generate power
3. None of them are shown to run for any length of time
4. Why aren't we using such machines to generate power for everyone already?

Burnthem
26-10-2012, 07:11
I thought perpetual motion existed only in the land of unicorns and dragons? Kind of like trying to walk through walls, the universe just won't let you.

Avian
26-10-2012, 07:37
Perpetual motion requires no energy loss at all, which isn't doable in reality. You can get something that spins by itself for a while, but eventually it's going to stop. That's why all those YouTube videos are so short.

Of course, once you hook up a dynamo to the thing, it stops really quickly, because you're taking a lot of energy out of the system.

It is POSSIBLE to build your own a sort of gravity motor, but it provides a TINY amount of energy and is completely useless for all practical intents and purposes. Heat pumps (http://en.wikipedia.org/wiki/Heat_pump) (a bit like a reverse fridge), by comparison, also takes energy out of the enviroment, but does it much more efficiently. Rather than spending $50 on building the rig in the video, which isn't going to power anything, you're much better investing in one of those.

x-esiv-4c
26-10-2012, 14:42
There is no such thing as free energy.

Mars
26-10-2012, 18:52
it would not be "free" as such, as you still need the materials to build such a device at the very least

that said I am intruiged by the concept of non-fosile energy. I mean, in a world where we can get enough energy out of an atom to power cities, convert energy from light, wind and waves... it makes me wonder if there is no way to capture the energies that move planets

Avian
26-10-2012, 19:06
it makes me wonder if there is no way to capture the energies that move planets
As I said, you absolutely CAN build a gravity engine, just like you CAN build an engine that runs on hamsters.
Just don't expect it to power very much.