Biringuccio, Vannoccio (1480–1537)
One part of fire takes up as much space as ten parts of air, and one part of air takes up the space of ten parts of water, and one part of water as much as ten parts of earth. Now sulfur is earth, consisting of the four elementary principles, and when the sulfur conducts the fire into the driest part of the powder, fire, and air increase ... the other elements also gird themselves for battle with each other and the rage of battle is changed by their heat and moisture into a strong wind.Biringuccio's description of the burning, gas-exhausting phenomenon was correct enough, despite its non-technical language. Yet it failed to explain why a strong wind blowing downward should cause a rocket to rise upward. It was nearly a century and a half later that Isaac Newton provided the key with his third law of motion.
Related categories HISTORY OF ROCKETRY
ROCKET ENGINEERS AND SPACE SCIENTISTS
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