New Topological Invariants Expressible as Tensors
James W. Alexander · Proceedings of the National Academy of Sciences · 1924
mouth of R falls below that of the atmosphere, while the pressure within R, at its closed (v 0, nodal) end rises above atmospheric pressure, so that R is now thrust outward from P.1 Advance note from a report to the Carnegie Inst., of Washinjton, D. C. 2 "The Vigorous Treatment of Pulsating Sources" is given by V. Bjerknes, Hydrodyn.Fernkr., J. A. Barth, 1902, Leipzig.' This may be tested by lowering a disc within P. With this disc a neutral layer may be found about 2 cm.within P and a symmetrical neutral layer about 2 cm.from the telephone plate.