Using strong Neodym magnets to attract a ferrofluid should slow down the Brownian movement of the nanomagnets. The result must be a cooling of the liquid. As the energy must not get lost the magnet should get warmer. Maybe there is a possibility to collect ambient warmth from ferrofluid to heat up a magnet. So it should be possible to generate a thermic potential difference from ambient temperature. A classical case of 2nd "law" violation.

What do you think about this? I will try this and let you know whether it works.

Regards Andreas

First results are available, but my thermometer is not sensitive enough to detect temperature differences that are less than 1 degree Celsius.
Very interesting is that a strong magnetic field forms spikes within the ferrofluid. But the magnetic field also superposes the Brownian movement so the nano particles within the ferrofluid begin to stick together. So after several hours the spikes disappear and the ferrofluid forms a drop. After removing the magnetic field, the Brownian movement needs about an hour to disperse the nanoparticles within the fluid again. Only after that the ferrofluid can form spikes again. As soon as I have a highly sensitive thermometer I will repeat the experiment and post the results.

Regards

Andreas

Hi betajim,

thanks for your advice. I think it will last two or three weeks to get the right thermometer and to set up an insulated measurement surrounding.

Regards

Andreas