Shock or Water Ram in Pipe Lines with Imperfect Reflection at the Discharge End and Including the Effects of Friction and Non-Uniform Change of Valve Opening.

However, too much faith cannot be placed on intercepts taken so near the origin, with small deflections. 1 Thomson, J. J., London Phil. Mag., Sept., 1915. 2 Rutherford, E., Proc. Cambridge Phil. Soc., 9, 1898 (401). I Franck, J., Verh. Deuts. Phys. Ges., 12, 1910 (613). 4 Wellisch, E. M., Phil. Mag., 34, 1917 (199); also New Haven, Amer. J. Sci., July, 1917. 6 Haines, W. B., Phil. Mag., Oct., 1915; also July, 1916. 6 Thomson, J. J., Rays of Positive Electricity, Monographs on Physics, Longmans, Green & Co., 1913. 7 Bohr, N., Meddelandenfran k. Vetenskapsakademiens Nobel Institute, 5, 1919, No. 28.