The chances of individual stars of the two systems colliding are infinitesimal.
Deidre gazed after him, fear and hope colliding within her.
There is no reason to doubt that in the case of the fountain also, coalescence is due to differences of potential between colliding drops.
His face was in her thoughts, and the idea of never seeing him again crushed her as surely as colliding with the planet would.
She felt his fear and squeezed her eyes closed, the man in her arms colliding with the man hiding in the corner of her mind.
In the absence of dust and greasy contamination, the obliquely colliding jets may rebound from one another without coalescence for a considerable time.
This view is confirmed by experiments in which other gases are substituted for air as the environment of colliding jets.
The actual behaviour of the colliding drops becomes apparent under instantaneous illumination, e.g.
Thus the contribution to the total impulsive pressure exerted on the area dS in time dt from this cause is mu X udtdS X (11 3 m 3 /,r 3)e hm (u2+v2+w2 )dudvdw (I o) The total pressure exerted in bringing the centres of gravity of all the colliding molecules to rest normally to the boundary is obtained by first integrating this expression with respect to u, v, w, the limits being all values for which collisions are possible (namely from - co too for u, and from - oo to + oo for v and w), and then summing for all kinds of molecules in the gas.