SERIES XI
Polished ivory sphere, 1·9 centim. in diameter, falling 60 cm. into water mixed with milk.
| 1 | 2 T = 0 | 3 |
| 4 0·002 sec. | 5 | 6 0·004 sec. |
| 7 0·031 sec. | 8 0·045 sec. |
| 9 0·062 sec. |
Series XII shows how even with a very highly polished metal sphere falling into water from the still greater height of 100 cm. the characteristic sheath of the "smooth" splash is no longer so closely fitting even at an early stage, but is beginning to resemble the earlier stages of the basket-shaped crater of the "rough" splash; yet no air was taken down at this height.
The transition was also watched by means of photographs taken below the water-line.
It may be well here to guard the reader against a possible misconception. The curved outline of the liquid in these photographs does not represent the path followed by the particles. Each particle must have travelled in a nearly straight line from the moment it left the surface of the sphere, and must still be moving upwards and outwards. Gravity has not had time to produce any sensible displacement. This applies also to the curved outlines in many other early figures.