Excerpt from Resistance of AirIt may be said that all the experimenters will insist, and be prepared to prove by X+V, that the air they experiment with is not being accelerated - that its motion is uniform. It will be difficult, however, to Show how the air is caused to travel through a wind-tunnel if it is not accelerated, by a fan or some other means.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.