ZERO INPUT, 10 degrees thermal output...Yes,...genuine free energy

[profitis]

Quote frm markE:
'If you proceed, make sure that you can measure small temperature differences reliably, even if the absolute accuracy is so-so.  A pair of these connected in a half bridge connected to a battery is the simplest, crudest set-up.  You can improve on it by stabilizing the excitation source, adding a dummy half bridge for zero, etc.  http://www.ebay.com/itm/2-Pcs-NTC-Thermistor-100K-With-1M-Cable-RepRap-Prusa-Mendel-Bed-or-Hot-End-/291187799870?pt=LH_DefaultDomain_0&hash=item43cc25373e
Navigation'

End quote

Uh-uh, batteries in the area will release heat,simplest route is to measure if any current(microamps) is coming out the bismuth ball via contact with any sensitive thermo-semiconductor eg pyrites,galena,copper sulfide ore(extremely sensitive)etc etc. Bismuth must be settled in styrofoam or cotton for max heat retention

[TheoriaApophasis]

Quote frm markE:
Bismuth must be settled in styrofoam or cotton for max heat retention

10 degrees is nothing to warm your hands over.   

   Regardless of heat retention, it is extremely MINOR.

[profitis]

Quote frm ken:
   'Regardless of heat retention, it is extremely MINOR.'

Insulated black sock demo should be enough for a at least a microamp against copper sulfide crystal with small crossarea contact point.I've measured temp difs of far less using such methods..

[TheoriaApophasis]

.I've measured temp difs of far less using such methods..

measured yes.......... useful is another thing altogether.

however low temp nitinol wire has been suggested to make a neat perpetual motion "toy", where a wire uncurls, then cools and recurls perpetually.

[profitis]

 if you sandwich large crossarea bismuth block onto zinc antimonide semiconductor(one of the most efficient) then your power should start to hit in tens of microamps range at 10degrees dif. Then it becomes useful (clocks,watches,remotes)