In fluid dynamics, an eddy is the swirling of a fluid and the reverse current created when the fluid is in a turbulent flow regime. The moving fluid creates a space devoid of downstream-flowing fluid on the downstream side of the object. Fluid behind the obstacle flows into the void creating a swirl of fluid on each edge of the obstacle, followed by a short reverse flow of fluid behind the obstacle flowing upstream, toward the back of the obstacle. This phenomenon is naturally observed behind la
Opened on January 15, 1975, Space Mountain is the oldest operating roller coaster in the state of Florida, and is the original version of the iconic attraction that has since been replicated at all of The Walt Disney Company's Magic Kingdom-style theme parks worldwide, except for the Shanghai Disneyland Resort.
The show was originally named Rocket to the Moon and it opened in 1955 along with Disneyland. The ride was refurbished as Flight to the Moon in 1967. On March 21, 1975, the destination was changed to Mars because humans had already been to the Moon. During that time, the attraction was considerably dated. The show was initially sponsored by McDonnell-Douglas.