Standard vacuum in the atmosphere.
"I contend that a body projected through an atmospheric vacuum, even at a certain velocity, will meet resistance. It would not in an etheric vacuum, at any conceivable velocity." [COMMENTS OF JOHN WORRELL KEELY ON DR SCHIMMELS LECTURE]
See Also
Cosmic Vacuum
Cosmic vacuum tube
Energy from Vacuum
eternal electronic vacuum of Nature
Etheric Vacuum
Figure 3.6 - Tornado Vacuums up Everything for Redistribution
Figure 7.11 - Russells Vacuum becoming Matter on Three Vectors
Light Created from Vacuum
Longitudinal Waves in Vacuum
Sound in Vacuum
The Universal Vacuum
universal vacuum
Vacuum
vacuum condition
Vacuum Energy
Vacuum from Vibratory Induction
vacuum tube
Vacuum Turbine - Schauberger
VACUUMS FROM VIBRATORY INDUCTION
zero vacuum
12.30 - Thermal Radiation and Thermal Vacuum or Cold
15.11 - Dissociating Water with Vacuum
2.13 - Vacuum