A straight line can readily be drawn among each of the two series of points corresponding to the 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 the maxima and minima, thus showing that there is a simple relation between the brightness of the variables and their periods.

Henrietta Swan Leavitt

Related topics

draw line maximum series showing simple straight thus points

Related quotes