Labels:text | screenshot | font OCR: time its flight begins and is reduced over the duration of its course. Leonardo this time counters his rhetorical adversary and lays the question to rest. Through his direct observations of the action of water in a similar situation, he establishes by analogy that the movement of air is not necessarily what is needed to provide force. The bullet forces the air out of its path and pushes the air away. The vacuum behind the bullet is created continually, and the pathway is filled not by the air closest to the back, nor by that forced away from the front: "The swift movement of the rarefied air in order to fill up
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