41. This is mostly due to the anisotropic compressibility of black phosphorus because of the asymmetrical crystal structures. 42. However, the compressibility of the fluid is very important in describing the evolution of the system. 43. The ratio relation allows one to express the isentropic compressibility in terms of the heat capacity ratio. 44. A compressibility factor of one also requires the four state variables to follow the ideal gas law. 45. This number describes the range between flows that can be considered incompressible and flows where compressibility is important. 46. The speed of a compression wave in fluid is determined by the medium's compressibility and density. 47. Sweep theory helps mitigate the effects of compressibility in transonic and supersonic aircraft because of the reduced pressures. 48. Construction on bay mud sites is difficult because of the soil's low strength and high compressibility . 49. The deviation from the ideal gas behaviour can be described by a dimensionless quantity, the compressibility factor,. 50. The calibration equation ( see calibrated airspeed ) accounts for compressibility , but only at standard sea level pressure.
