Table 1 The compressibility and the bulk modulus of air Β from Eq. 7 and the bulk modulus of air from the literatures Β* at 25 °C
| \(\begin{gathered} \sigma \\ ({\rm A}^{ \circ } ) \\ \end{gathered}\) | \(\begin{array}{*{20}c} \varepsilon & { \times 10^{2} } \\ \end{array}\)\((ev)\) | \(T\)\((K^{ \circ } )\) | \(\begin{gathered} \chi_{\rm T} \\ ({\text{MPa}}^{ - 1} ) \\ \end{gathered}\) | \(\begin{gathered} {\rm B} \\ ({\text{MPa}}) \\ \end{gathered}\) | \(\begin{gathered} {\rm B}^{*} \\ ({\text{MPa}}) \\ \end{gathered}\) |
|---|---|---|---|---|---|
| 3.6170 | 1.033 | 298.16 | 9.7929 | 0.1021 | 0.1010 |