The Vacuum was created in 2003.
A complete vacuum is created in the absence of matter, especially in gaseous form. The phenomenon of suction generally associated with a vacuum results from a pressure gradient. Since P=nRT/V and there are more moles of gas outside of the vacuum there is also a greater pressure outside of the vacuum.
Sound waves need to cause vibrations in a medium in order to travel. Vibrations cannot be created in a vacuum, as there is no matter present.
Although it is called a vacuum cleaner, it does not actually create a vacuum. Inside the cleaner there is an electric motor which drives a fan blade. This fan blows air out of the vacuum cleaner and this causes air to be drawn in to the cleaner at the other end. Thus the cleaner works by creating an air flow, not a vacuum.
So that there is nothing to physicall conduct heat across the gap.
The Vacuum was created in 2003.
High Vacuum was created in 1957.
Edwards - Vacuum - was created in 1919.
Vacuum Flowers was created in 1987.
Pfeiffer Vacuum was created in 1890.
A Perfect Vacuum was created in 1971.
Lovetune for Vacuum was created on 2009-04-13.
Vacuum Oil Company was created in 1866.
Alcatel Vacuum Technology was created in 1952.
American Vacuum Society was created in 1953.
Vacuum Diagrams was created on 1997-04-24.
Schmalz Vacuum Technology Ltd was created in 2006.