Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
An illustration of different types of optimum locations on an energy surface/function. The energy function is rendered using a 3D matlab display function with color indicating the energy value. Here, valley lines are shown with Types I (pit) and II optimum locations on the energy surface are denoted by hollow circles of different colors.
