But the plenum as a form of self-organisation in which citizens come together to articulate demands underpinned by protest marches, is now under attack.
Of course, Descartes also defined motion as relative to an enduring 3-dimensional Euclidean space; the difference is that Descartes space was divided into parts (his space was identical with a plenum of corpuscles) in motion, not a rigid structure in which (mobile) material bodies are embedded.
The airflow distribution is determined by the pressure decay and flow pattern in the plenum, which is affected by the size of plenum, the open area of the diffusers, air leakage, and the obstructions under raised floor.
Cockerell (later knighted) bypassed Thornycroft's plenum chamber (in effect, an empty box with an open bottom) principle, in which air is pumped directly into a cavity beneath the vessel, because of the difficulty in containing the cushion.
In 1937, Stalin orchestrated a terror against erstwhile comrades, making them accuse one another at a Central Committee Plenum, then supervise one another's torture and execution; in 1979, Mr. Hussein parodied this at a filmed Baathist conference in which his "enemies" were named, then shot downstairs by their colleagues.
The experimental data is obtained for a range of frequencies using a configuration in which a mean (or bias) flow passes from a duct through the test orifices before issuing into a plenum.
Experiments are described in which boiling was initiated in uniformly superheated water in tubular and pin-cluster geometries, producing voiding into a sub-cooled plenum.
This is different to 'plenum anaesthesia' in which a carrier gas is pushed through the vaporiser at a constant rate.
Two vapor condenser technologies are proposed: cooled flat plates (located after the nozzle exit) and cooled porous media, located in the cooling chamber plenum, within which humid hot air percolates before being pushed away by the fan.
