Recent content by MrSponge

Hi, I was wanting to insert 1 inch foam balls inside a container of ferrofluid, causing the foam ball to float. A normal one-way water valve would not let the ball through without any leakage (I believe), therefore I think that If i can build a valvue that consists of a ring of neodynium...

Hi, I've been thinking about ferroufluid and its application and whether anybody would be able to answer my questions. Is it denser or lighter than water. I know oil floats but it has iron in it. Surface tension of it. Reason I am asking about the surface tension is that I was wondering...

Thanks for replying, but I know how magnets and generators work. I am just saying if magnets demagnetize over time, and would require electrical energy to create a magnetic field, to re align the magnet. Then any electrical energy produced in a wind tubines life would be the exact same amount as...

I am studying Mechanical Engineering at college, so please forgive me for any assumptions I make. I know (been told) that magnets are used to convert mechanical energy into electrical energy. And have no energy of their own. I have been thinking why a magnetic generator powering it self will...

Sorry, i am quite famillier with the terminology, I am studying it as part of my engineerring course at a A level. I was just wondiring if it would create resistance in i put a magnet in a coil. Or whether it would charge it at all. I know that they say, if you want to make a bar magnet...

Sorry, I don't understand what you mean.

Ok, 2 questions, Would putting them in a coil to recharge them, work? Never mind how slightly. The next one is, Do you know them amount of energy that can be produced per magnet. For example. A small wind turbine might have 10 magnets in it, and in its life time it could genererate 10 mW of...

Ok, thank you for replying. Ok so just for saying I have made a generator that has magnets in it. And I believe that magnets wear out overtime, therefore their effective pulling/pushing forces will decrease; meaning less power output. Could I then regenerate/magnetise said magnets if I...

I was just wondering and I looked and couldn't find anything. I suppose i could experiment it my self but anyway. If I had a wire with an electrical current flowing through, just say 10Amp; and I pass a magnet near the wire, would it slow the current down? Or increase the resistance? I know...

I believe that could work quiete well. Thanks you for spending time to make that diagram.

That is a really beautiful design, a lot what I was thinking. Just two questions though... Why the aquarium pump? When the balls from the hopper have entered the ball wells and rotated to under the water tank how will it float if there is no water under it to help it float? If it would...

Iy needs to be bigger for more than one person, but this will need supervison. A paddling pool can be just as dangerous. However I am concered about the mechanisms, so can you help me improve the mechanisms?

The design isn't really to scale however, i will prefer it to be larger than smaller so more kids can play. So what system would this be then? An answer wouldbe greatly welcome. Thanks

Thanks for the quick reply, I suppose the design can change, but the design i though of was the simpliest I could think of. ( I normally over complicate/design stuff). The criteria you stated is correct '- balls need to be dropped into a hopper - balls get released, one at time, by some...

So, does anybody have any better ways to dispense the ball in the tank? THanks for previous and future posts and help.