Wilbert Smith Archives Files Box 1131 17 1131-17-p057

Document Text (OCR)

Sample light curves from the Calder apparatus. At the left one star is an opal enlarging bulb; the other star is smaller and fainter. The secondary minimum is at S, with the small star in front of the larger. darkening of the large star. The primary minimum is at P, with the small star totally eclipsed; the minimum is flat. At the right, the small star’s brightness has been increased, and $ becomes shallower. tric, as indicated by the difference in time from P to S, compared with S to P....