This formula is a template, for inclusion into pages about Acoustics. Use the following syntax to include it:
{{:Acoustics/formulas/Condition}}
Q L = 1 k e f f Q m 0 Q E = Q L o p t {\displaystyle Q_{L}={\frac {1}{k_{eff}}}{\sqrt {\frac {Q_{m0}}{Q_{E}}}}=Q_{Lopt}}
