Physico-mechanical experiments on various subjects [microform] : containing an account of several surprizing phaenomena touching light and electricity, producible on the attrition of bodies : with many other remarkable appearances, not before observ'd : together with the explanations of all the machines,(the figures of which are curiously engrav'd on copper) and other apparatus us'd in making the experiments : to which is added, a supplement, containing several new experiments not in the former edition / by F. Hauksbee