Walking along Magazine Street from the edge of the Garden District to the Central Business District, you still pass some rough areas.

FORBES: The Katrina Effect: Renaissance On The Mississippi

The first step is simply for a player to note the time it takes for the ball to pass a fixed point to get a rough approximation of the velocity of the ball.

FORBES: Scientists Beat The House At Roulette With Chaos Theory

When we couldn't escape from a rough sea, we would take refuge in a cave and pass the night shivering.

BBC: Like the Amalfi coast? Try the Gargano promontory