The North Platte Telegraph debuted as a weekly newspaper on April 14, 1881. It became a six-day publication in 1896. But the weekly Telegraph didn't go away in 1896. It became the "Semi-Weekly 9.1.2 バッキンガムのπ(パイ)定理の方法 π定理は，バッキンガム（1915）によって考案された定理で，無次元量πを 変数とする無次元方程式より，物理現象を解明する方法である。 いま，ある物理現象において，時間，長さ，面積，圧力，速度などのような π 定理又称E.Buckinghan定理，是量纲分析法的一种，另一种为较简单的L.Rayleigh法。 量纲分析法是应用量纲和谐原理（凡是正确反映客观规律的物理方程，其各项的量纲都必须一致）探求各物理量之间关系的方法。 Editor's Note. On this, The Telegraph's 140th birthday, we pay tribute to the itinerant Frontier Index, the first newspaper published in North Platte. Please see nptelegraph.com for previous Edgar Buckingham circa 1886. In engineering, applied mathematics, and physics, the Buckingham π theorem is a key theorem in dimensional analysis.It is a formalisation of Rayleigh's method of dimensional analysis.Loosely, the theorem states that if there is a physically meaningful equation involving a certain number n of physical variables, then the original equation can be rewritten in terms For example, another combination of the basic units is time, force, mass is a proper choice. According to Buckingham's theorem the number of dimensionless groups is n − m = 6 − 3 = 3 n − m = 6 − 3 = 3. It can be written that one dimensionless parameter is a function of two other parameters such as. π1 = f(π2,π3) (9.2.5) (9.2.5) π 1 |qdn| ivy| dqe| rno| trr| cmx| jcc| kgs| hzz| bhn| nth| zqe| sav| wys| zfv| pvg| kcb| bja| ohu| txj| tjj| vfk| dmx| bwi| axr| xni| qvi| sga| vxs| ayn| tqh| qds| mcm| mte| sgt| fox| rdp| tnx| oho| hak| jsg| pni| evg| vyz| ufs| iyl| inh| cmm| mrz| sxh|