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The Study of the path of the projectile is an excellent way for historians oftechnology to learn the science of motion from artillery to ballistics.Masashige Yamada,one of the Mathematicians in Edo Period,shows the trajectory of projectile as utterlysame as Tartaglia. The trajectory consists of straight line out of canon,a small partcircular arc and then,after loosing momentum,a straight line downward.Later,afterexamining the experimental results, he revised the trajectory as the parabolic curve.Excluding any effects of air friction,projectiles have parabolic paths.Projectile has no engine to produce thrust,so it subjects to only the force of weight,trajectory becomes parabolic curve.On this report,the author investigate the History of Differential Equation Analyses in late Edo Period and Meiji Restoration Era when Numerical Technique was not developed,and electronic computers did not exist.
The Study of the path of the projectile is an excellent way for historians of technology to learn the science of motion from artillery to ballistics. Masashige Yamada, one of the Mathematicians in Edo Period, shows the trajectory of projectile as utterlysame as Tartaglia. The trajectory consists of straight line out of canon, a small part circular arc and then, after loosing momentum, a straight line downward. Later, afterexamining the experimental results, he revised the trajectory as the parabolic curve. Excluding any effects of air friction, projectiles have parabolic paths .Projectile has no engine to produce thrust, so it subjects to only the force of weight, trajectory becomes parabolic curve. Now this report, the author investigate the History of Differential Equation Analyzes in late Edo Period and Meiji Restoration Era when Numerical Technique was not developed, and electronic computers did not exist.