Giving Us Reasons To Smile (teeth + electricity)

Schemes for ‘harvesting’ energy range from electricity-generating dancefloors to knee dynamos. But there is now a new option – patented last month by the Colgate-Palmolive Company (New York), the ‘Oral care implement with mechanical energy harvesting‘. During use, the invention employs piezoelectric devices to generate electricity from the stresses-and-strains caused by bending the toothbrush head […]