Yes - good point - the MOAC is geared more to the 10 watt level - and this would need to be in the sub-milliwatt level. A brief googling however - indicates commercial nanowatt models are out there, in which one might be able to squeeze in a small singing bowl (with a piezo thumper) or a handful of tuning forks etc http://www.bioresearchonline.com/article.mvc/Ultra-Sensitive-Calorimetry-One-Of-The-Best-K-0002?VNETCOOKIE=NO The conversion to Joules is 1 watt hour = 3600 J and I would suspect that a sharp bowl-strike, and/or subsequent recovery of the heat from same, would be in the fractional joule or ten to hundred microwatt range. A bit more than a cricket-chirp, and far more meaningful than a Park-chirp ;-) -----Original Message----- From: Jed Rothwell Jones Beene wrote: >This kind of thing could be accomplished using a precision >calorimeter, and it is a bit surprising that it has not been >attempted, such as in the MOAC ... I think this would be orders of magnitude below the sensitivity of the MOAC. You would need a micro-calorimeter, such as the one they use at Tsinghua U., which they claim can measure the heat from a cricket chirping. Space-based Michael calorimeters can measure the heat from a single fast moving nuclear particle impact. I do not think the sample holder of a conventional micro-calorimeter could accommodate something like this. The schematics of the ones I have seen have very small capacity. - Jed
> > This kind of thing could be accomplished using a precision calorimeter, and > > it > is a bit surprising that it has not been attempted, such as in the MOAC ... > > I think this would be orders of magnitude below the sensitivity of the MOAC. > You > would need a micro-calorimeter, such as the one they use at Tsinghua U., > which > they claim can measure the heat from a cricket chirping. Space-based Michael > calorimeters can measure the heat from a single fast moving nuclear particle > impact. > > I do not think the sample holder of a conventional micro-calorimeter could > accommodate something like this. The schematics of the ones I have seen have > very small capacity. > > - Jed
