Cheers for Mark Valentine's Breath-Powered Calculator

Mark Valentine described his breath-powered calculator (Fig. 1) in "A Calculated Risk: Going Where No Foam Has Gone Before" (The Citizen Scientist, 01 February 2008). Mark's article has been noted and linked to by some interesting web sites, most notably Make Magazine's makezine.com blog and also by Developages--Development and Technology Blog and Tech Takeaway.

Mark's article was also cited here, here, here and by other sites. Some sites listed Make Magazine as the source for this clever project, which is certainly a complement for the talented Mark. We're just glad that Mark is willing to submit projects to The Citizen Scientist.

Forrest M. Mims III