# Formula font and line space reduced in array, how to solve this problem? [duplicate]

Possible Duplicate:
Make every element of an array displaystyle?

I am typing the following equations,

$$\left\{ \begin{array}{l} L = {C_L}{\left( {\frac{{{k^3}}}{{\varepsilon _h^2}} + C_\eta ^2\frac{{{\nu ^{3/2}}}}{{\varepsilon _h^{1/2}}}} \right)^{{1 \mathord{\left/ {\vphantom {1 2}} \right. \kern-\nulldelimiterspace} 2}}}\\ T = {\left( {\frac{{{k^2}}}{{\varepsilon _h^2}} + C_T^2\frac{\nu }{{{\varepsilon _h}}}} \right)^{{1 \mathord{\left/ {\vphantom {1 2}} \right. \kern-\nulldelimiterspace} 2}}}\\ {T_{\lim }} = \frac{{0.6}}{{\sqrt 6 {C_\mu }\varsigma \sqrt {{S_{ij}}{S_{ij}}} }} \end{array} \right.$$


However, I found the line spacing and fonts in the formula is "automatically" reduced and resized by the compiler. :(

Could anyone tell me how to normalize it? Thanks

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## marked as duplicate by David Carlisle, Marco Daniel, percusse, Tom Bombadil, Claudio FiandrinoSep 6 '12 at 12:39

In addition to methods of making arrays be displaystyle it is generally better to use align from the amsmath package rather than using array to align equations – David Carlisle Jul 26 '12 at 18:47
this should yield some improvement; it requires use of amsmath:
\left\{ \begin{aligned} L &= {C_L}{\left( {\frac{{{k^3}}}{{\varepsilon _h^2}} + C_\eta ^2\frac{{{\nu ^{3/2}}}}{{\varepsilon _h^{1/2}}}} \right)^{{1 \mathord{\left/ {\vphantom {1 2}} \right. \kern-\nulldelimiterspace} 2}}}\\ T &= {\left( {\frac{{{k^2}}}{{\varepsilon _h^2}} + C_T^2\frac{\nu }{{{\varepsilon _h}}}} \right)^{{1 \mathord{\left/ {\vphantom {1 2}} \right. \kern-\nulldelimiterspace} 2}}}\\ {T_{\lim }} &= \frac{{0.6}}{{\sqrt 6 {C_\mu }\varsigma \sqrt {{S_{ij}}{S_{ij}}} }} \end{aligned} \right.