TY - JOUR T1 - Experiments on the Dark Space in Vacuum Tubes JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 79 IS - 528 SP - 98 EP - 117 PY - 1907/04/24/ UR - http://dx.doi.org/10.1098/rspa.1907.0018 M3 - doi:10.1098/rspa.1907.0018 AU - Crookes, W. ER -