These are all problems in which a shape needs to be modified. In the case of solder, you are talking about what shape a droplet should take - the boundaries of the droplet are constantly modified until the optimal shape is found.  -   Ganesh Subbarayan     Quotes
These are all problems in which a shape needs to be modified. In the case of solder, you are talking about what shape a droplet should take - the boundaries of the droplet are constantly modified until the optimal shape is found. Ganesh Subbarayan
 Boundaries