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.
This optical illusion demonstrates the power of your brain’s use of past experiences to construct what you read. Sweep your eyes from left to right, and you’ll perceive the central symbol as a “B”; sweep your eyes from top to bottom and it transforms into a “13”.
