I know I'm famous and irresitible - a combination whose properties closely resemble radioactivity - and I know that you in this room are helpless against me. Jennifer Egan
Apparently no sharp dividing line can be drawn between true Algol stars and those whose variations are continuous. Periods of nine variables in this region, which are of the Algol type or closely resemble it, have been determined and are here discussed. Henrietta Swan Leavitt