Hеnriеttа Swаn Lеаvitt (Julу 4, 1868 – Dесеmbеr 12, 1921) wаѕ an Amеriсаn аѕtrоnоmеr whо diѕсоvеrеd thе relation bеtwееn thе luminоѕitу and thе реriоd оf Cepheid Full Biography
It is also noticeable that those having the longest periods appear to be as regular in their variations as those which pass through their changes in a day or two. Henrietta Swan Leavitt
It is also noticeable that those having the longest periods appear to be as regular in their variations as those which pass through their changes in a day or two.
It is worthy of notice that in Table VI the brighter variables have the longer periods. Henrietta Swan Leavitt
It is worthy of notice that in Table VI the brighter variables have the longer periods.
A straight line can readily be drawn among each of the two series of points corresponding to maxima and minima, thus showing that there is a simple relation between the brightness of the variables and their periods. Henrietta Swan Leavitt
A straight line can readily be drawn among each of the two series of points corresponding to maxima and minima, thus showing that there is a simple relation between the brightness of the variables and their periods.