21. As the bullet moves down the bore, however, the propellant's gas pressure behind it diminishes. 22. This is significantly higher than the capabilities of warm liquid or warm gas pressure forming. 23. In the Sun, radiation pressure is still quite small when compared to the gas pressure . 24. In M giant red giants the gas pressure is too low for FeH to form. 25. A non-rigid airship relies entirely on internal gas pressure to retain its shape during flight. 26. Since the technique is usually performed within a vacuum, the initial gas pressure is zero. 27. Interplay between magnetic pressure and ordinary gas pressure is important to magnetohydrodynamics and plasma physics. 28. The gas pressure also forces the collar outwards against the rifling, creating a gas seal. 29. Ksi are not widely used for gas pressures . 30. The gas pressure in the source is regulated by heating or cooling the gas reservoir element.
