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国际单位制的计量压力量值的单位是牛顿/米~2(N/m~2)。一九六九年,国际权度委员会通过一项决议,建议给予该单位一个专门名称“帕斯卡”(Pascal),符号为 Pa,经第十四届国际权度大会批准采用。帕斯卡是十七世纪(1623—1662)时代法国著名的数学家、物理学家。在他十六岁的时候就写有关于圆锥曲线的名著,十九岁他发明了演算器,三十岁提出了关于二项式幂系数的三角形排列法,并创立了概率论。特别是帕斯卡在流体静力学方面有卓越的成就,发现了流体的压强原理,称之为帕斯卡定律。即是外力作用于液体表面所产生的压强,传播到液体中的任何方向,其强度大小保持不变。这一定律的发现,为后来水压机的发明,奠定了理论基础。
The unit of measurement of the amount of pressure in the SI system is Newton / m ~ 2 (N / m ~ 2). In 1969, the International Weights Committee passed a resolution recommending that the unit be given a special name “Pascal”, symbol Pa, approved by the Fourteenth International Congress. Pascal is a famous French mathematician and physicist in the 17th century (1623-1662). At the age of sixteen he wrote the famous book about conic curves, at the age of nineteen he invented the calculator, the thirties proposed the triangle arrangement of the power of binomial, and founded the theory of probability. In particular, Pascal has excellent achievements in the field of hydrostatics and has discovered the principle of fluid pressure, which is called Pascal’s law. That is, the pressure generated by the external force acting on the surface of the liquid, spread to any direction in the liquid, the strength of the size remains unchanged. The discovery of this law, for the later hydraulic press invention, laid the theoretical foundation.